Tender

Framework for the provision of a Tunnelling, Drilling & Shaft Works for Build Only and Design & Build

SEVERN TRENT WATER LIMITED

This public procurement record has 1 release in its history.

Tender

02 Apr 2026 at 13:57

UK4 - Tender Notice
Summary of the contracting process

Severn Trent Water Limited, based in Coventry, and Hafren Dyfrdwy Cyfyngedig, located in Wrexham, are overseeing a tender process for a substantial framework focusing on tunnelling, drilling, and shaft works. This framework entails both Build Only and Design & Build projects, encouraging interested firms to partake. Classified under construction, public utilities, and services related to the oil and gas industry, this active tender invites bids for a selective procurement method involving competitive flexible procedures. The submission deadline is set for 14:00 on 22 April 2026, with the contract period running from 30 September 2026 to 29 September 2038 and potentially extending to 2041. Projects are to be conducted across various regions of the United Kingdom, adhering to detailed quality and price assessment criteria.

This procurement process presents substantial opportunities for businesses specialising in civil engineering and related sectors. Companies with expertise in trenchless construction methods, such as micro tunnelling or horizontal directional drilling, stand poised to benefit, especially those capable of undertaking both tunnelling and shaft works in conjunction. SMEs are encouraged to express interest, as the framework is tailored to accommodate smaller firms along with larger competitors. Participation in this tender allows businesses to showcase technical and commercial capabilities through a two-stage process, ultimately securing a position within a diverse and high-value framework, promoting long-term business growth within utility construction works.

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Notice Information

Notice Title

Framework for the provision of a Tunnelling, Drilling & Shaft Works for Build Only and Design & Build

Notice Description

The Utilities requirement is for the provision of a multi lot Tunnelling, Drilling & Shaft Works Framework for the delivery of works as Build Only and Design & Build across the Utilities regions. The Lots are detailed below. B = Build Only, D&B = Design & Build 1 B Pipe Ramming 1 D&B Pipe Ramming 2 B Thrust Boring 2 D&B Thrust Boring 3 B Horizontal Directional Drilling (25-630) 3 D&B Horizontal Directional Drilling (25-630) 4 B Horizontal Directional Drilling (630-1200) 4 D&B Horizontal Directional Drilling (630-1200) 5 B Horizontal Directional Drilling - Rock Drilling (50-500) 5 D&B Horizontal Directional Drilling - Rock Drilling (50-500) 6 B Timber Heading 6 D&B Timber Heading 7 B Micro Tunnelling 7 D&B Micro Tunnelling 8 B Auger Boring 8 D&B Auger Boring 9 B Direct Pipe 9 D&B Direct Pipe 10 B Pipe Jacking 10 D&B Pipe Jacking 11 B Segmental Tunnelling 11 D&B Segmental Tunnelling 12 B Under Pinning (Free Air) 12 D&B Under Pinning (Free Air) 13 B Under Pinning (Compressed Air) 13 D&B Under Pinning (Compressed Air) 14 B Open Caisson Wet 14 D&B Open Caisson Wet 15 B Open Caisson Dry 15 D&B Open Caisson Dry 16 B Sheet Piled Pits 16 D&B Sheet Piled Pits 17 B Timber Shafts 17 D&B Timber Shafts Interested parties are to note; - the Utilities requirements will be predominantly Design & Build. - participants can not bid for a shaft lot in isolation (lots 12-17) they must have drilling/ tunnelling capability. - during tendering bidders will be evaluated and subsequently awarded Lots where bidders have demonstrated the required competency. The Utilities intend to call of works via mini competition or direct allocation where direct allocation allows. Further detail is provided in the PQQ and RFP Briefings and tender documents

Lot Information

Build Only - Tunnelling, Drilling & Shaft Works

The Lots ending "B" require the contractor to deliver the works as Principal Contractor only. Interested parties will have the opportunity to select the specific Lots they want to undertake when invited to tender following expression of interest in this opportunity. TUNNELLING & DRILLING WORKS Lot 1B - PIPE RAMMING Pipe ramming is a trenchless method for horizontally installing steel pipes or casings under obstacles like roads, railways, and rivers by using a pneumatic hammer to drive an open-ended pipe into the ground, displacing soil outwards. This technique is typically used to cross under embankments, road, rail and river links. Lot 2B - THRUST BORING Thrust boring is a trenchless method for installing pipes and conduits (like for utilities) underground without open digging, using a rotating auger inside a steel casing to excavate soil while hydraulic jacks push the casing forward, ideal for going under roads, railways, or buildings. It's a cost-effective, dependable technique for short to medium distances, creating a bore for the final pipe or cable installation, and minimizing surface disruption. Pipe Diameter mm (host pipe internal diameter) = 25 -1000 Lot 3B - HORIZONTAL DIRECTIONAL DRILLING (25-630) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 25-630 Lot 4B - HORIZONTAL DIRECTIONAL DRILLING (630-1200) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 630-1200 Lot 5B - HORIZONTAL DIRECTIONAL DRILLING ROCK DRILLING (50-500) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 50-500 Lot 6B - TIMBER HEADING A timber heading is a traditional, hand-dug tunnelling method using timber supports (sets, headboards, sideboards) to create a safe, short tunnel for installing pipes or cables, especially under busy roads or structures, avoiding major disruption by building around existing underground services. Headings are generally temporary structures where it is not required or economic to provide a more substantial structure. Pipe Diameter mm (host pipe internal diameter) = 1000-1500 Lot 7B - MICRO TUNNELLING Micro Tunnelling is a trenchless construction method for installing non man-entry size pipelines that uses a remotely operated, small-diameter tunnel boring machine (MTBM) to excavate underground while simultaneously jacking pipes into place, allowing for precise installation of utility tunnels (like sewers, cables, and conduits) without disturbing the surface above. It's ideal for crossings under railways, roads, and rivers, as it minimizes disruption. Pipe Diameter mm (host pipe internal diameter) = 250-1200 Lot 8B - AUGER BORING Auger Boring is a trenchless construction method that installs pipes or conduits underground by using a rotating helical screw (auger) inside a steel casing to excavate soil, pushing the casing forward and pulling spoil back to a launch pit. It's used to create stable, horizontal tunnels under obstacles like roads, railways, or rivers, minimizing surface disruption and traffic interruption, often called "dry boring" because it doesn't use liquid slurry. Pipe Diameter mm (host pipe internal diameter) = 50-1500 Lot 9B - DIRECT PIPE Direct Pipe is a trenchless technology that combines micro tunnelling and horizontal directional drilling (HDD) to install pipelines in a single step. It allows for the direct installation of pre-fabricated pipelines without the need for separate pilot hole drilling or pipe stringing, as is common in HDD. Pipe Diameter mm (host pipe internal diameter) = 90-710 Lot 10B - PIPE JACKING Pipe Jacking is a technique for installing man-entry size pipelines using a steerable tunnelling shield (similar to micro tunnelling, which is for non man-entry sized pipes). Typically the pipes are jacked from a drive shaft or pit behind a suitable shield. The pipes are installed using hydraulically powered rams which push off a jacking wall constructed within the drive shaft. Pipe Diameter mm (host pipe internal diameter) = 1200-3000 Lot 11B - SEGMENTAL TUNNELLING Segmental Tunnelling is the technique of forming an underground excavation using individual segments or rings by hand or mechanical means and providing a suitable supporting structure such that the excavation forms a permanent, stable and secure opening for the tunnel. Pipe Diameter mm (host pipe internal diameter) = 1500-14000 SHAFT WORKS For Lots 12B to 17B Interested parties are to note Bidders cannot bid for a Shaft Lot in isolation, Bidders must have capability to undertake associated tunnelling and or drilling works. See Tunnelling & Drilling Lots 1B to 11B. - All Shafts are concrete - Shaft Diameter Range (nominal internal diameter ms) = 2.44 to 25. - Shaft Depth Range (ms) = 5 to 25. Lot 12B - UNDER PINNING (FREE AIR) Lot 13B - UNDER PINNING COMPRESSED AIR) Lot 14B - OPEN CAISSON WET Lot 15B - OPEN CAISSON DRY Lot 16B - SHEET PILED PITS Lot 17B - TIMBER SHAFTS

Options: Initial Term 12 years with option to extend for a further 3 years in 1 year increments. (12+1+1+1)

Renewal: Initial Term 12 years with option to extend for a further 3 years in 1 year increments. (12+1+1+1)

Design & Build - Tunnelling, Drilling & Shaft Works

Design & Build - Tunnelling, Drilling & Shaft Works The Lots ending "DB" require the contractor to deliver the works as Principal Designer and Principal Contractor. Interested parties will have the opportunity to select the specific Lots they want to undertake when invited to tender following expression of interest in this opportunity. TUNNELLING & DRILLING WORKS Lot 1DB - PIPE RAMMING Pipe ramming is a trenchless method for horizontally installing steel pipes or casings under obstacles like roads, railways, and rivers by using a pneumatic hammer to drive an open-ended pipe into the ground, displacing soil outwards. This technique is typically used to cross under embankments, road, rail and river links. Lot 2DB - THRUST BORING Thrust boring is a trenchless method for installing pipes and conduits (like for utilities) underground without open digging, using a rotating auger inside a steel casing to excavate soil while hydraulic jacks push the casing forward, ideal for going under roads, railways, or buildings. It's a cost-effective, dependable technique for short to medium distances, creating a bore for the final pipe or cable installation, and minimizing surface disruption. Pipe Diameter mm (host pipe internal diameter) = 25 -1000 Lot 3DB - HORIZONTAL DIRECTIONAL DRILLING (25-630) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 25-630 Lot 4DB - HORIZONTAL DIRECTIONAL DRILLING (630-1200) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 630-1200 Lot 5DB - HORIZONTAL DIRECTIONAL DRILLING ROCK DRILLING (50-500) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 50-500 Lot 6DB - TIMBER HEADING A timber heading is a traditional, hand-dug tunnelling method using timber supports (sets, headboards, sideboards) to create a safe, short tunnel for installing pipes or cables, especially under busy roads or structures, avoiding major disruption by building around existing underground services. Headings are generally temporary structures where it is not required or economic to provide a more substantial structure. Pipe Diameter mm (host pipe internal diameter) = 1000-1500 Lot 7DB - MICRO TUNNELLING Micro Tunnelling is a trenchless construction method for installing non man-entry size pipelines that uses a remotely operated, small-diameter tunnel boring machine (MTBM) to excavate underground while simultaneously jacking pipes into place, allowing for precise installation of utility tunnels (like sewers, cables, and conduits) without disturbing the surface above. It's ideal for crossings under railways, roads, and rivers, as it minimizes disruption. Pipe Diameter mm (host pipe internal diameter) = 250-1200 Lot 8DB - AUGER BORING Auger Boring is a trenchless construction method that installs pipes or conduits underground by using a rotating helical screw (auger) inside a steel casing to excavate soil, pushing the casing forward and pulling spoil back to a launch pit. It's used to create stable, horizontal tunnels under obstacles like roads, railways, or rivers, minimizing surface disruption and traffic interruption, often called "dry boring" because it doesn't use liquid slurry. Pipe Diameter mm (host pipe internal diameter) = 50-1500 Lot 9DB - DIRECT PIPE Direct Pipe is a trenchless technology that combines micro tunnelling and horizontal directional drilling (HDD) to install pipelines in a single step. It allows for the direct installation of pre-fabricated pipelines without the need for separate pilot hole drilling or pipe stringing, as is common in HDD. Pipe Diameter mm (host pipe internal diameter) = 90-710 Lot 10DB - PIPE JACKING Pipe Jacking is a technique for installing man-entry size pipelines using a steerable tunnelling shield (similar to micro tunnelling, which is for non man-entry sized pipes). Typically the pipes are jacked from a drive shaft or pit behind a suitable shield. The pipes are installed using hydraulically powered rams which push off a jacking wall constructed within the drive shaft. Pipe Diameter mm (host pipe internal diameter) = 1200-3000 Lot 11DB - SEGMENTAL TUNNELLING Segmental Tunnelling is the technique of forming an underground excavation using individual segments or rings by hand or mechanical means and providing a suitable supporting structure such that the excavation forms a permanent, stable and secure opening for the tunnel. Pipe Diameter mm (host pipe internal diameter) = 1500-14000 SHAFT WORKS For Lots 12DB to 17DB Interested parties are to note Bidders cannot bid for a Shaft Lot in isolation, Bidders must have capability to undertake associated tunnelling and or drilling works. See Tunnelling & Drilling Lots 1DB to 11DB. - All Shafts are concrete - Shaft Diameter Range (nominal internal diameter ms) = 2.44 to 25. - Shaft Depth Range (ms) = 5 to 25. Lot 12DB - UNDER PINNING (FREE AIR) Lot 13DB - UNDER PINNING COMPRESSED AIR) Lot 14DB - OPEN CAISSON WET Lot 15DB - OPEN CAISSON DRY Lot 16DB - SHEET PILED PITS Lot 17DB - TIMBER SHAFTS

Options: Initial Term 12 years with option to extend for a further 3 years in 1 year increments. (12+1+1+1)

Renewal: Initial Term 12 years with option to extend for a further 3 years in 1 year increments. (12+1+1+1)

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-067c05
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/031005-2026
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
UK4 - Tender Notice
Procurement Type
Framework
Procurement Category
Works
Procurement Method
Selective
Procurement Method Details
Competitive flexible procedure
Tender Suitability
SME
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

45 - Construction work

65 - Public utilities

76 - Services related to the oil and gas industry

CPV Codes

45000000 - Construction work

65000000 - Public utilities

76000000 - Services related to the oil and gas industry

Notice Value(s)

Tender Value
£1,200,000,000 £1B-£10B
Lots Value
£1,200,000,000 £1B-£10B
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
2 Apr 2026Yesterday
Submission Deadline
15 Apr 20262 weeks to go
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
29 Sep 2026 - 29 Sep 2038 Over 5 years
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Active
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
SEVERN TRENT WATER LIMITED
Additional Buyers

HAFREN DYFRDWY CYFYNGEDIG

Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
COVENTRY
Postcode
CV1 2LZ
Post Town
Coventry
Country
Wales
Major Region (ITL 1)
TLL Wales
Basic Region (ITL 2)
TLL3 North Wales
Small Region (ITL 3)
TLL34 Flintshire and Wrexham
Delivery Location
TLC North East (England), TLD North West (England), TLE Yorkshire and The Humber, TLF East Midlands (England), TLG West Midlands (England), TLH East (England), TLI London, TLJ South East (England), TLK South West (England), TLL Wales
Local Authority
Wrexham
Electoral Ward
Ponciau
Westminster Constituency
Montgomeryshire and Glyndwr

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts. 

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                "description": "The Lots ending \"B\" require the contractor to deliver the works as Principal Contractor only. Interested parties will have the opportunity to select the specific Lots they want to undertake when invited to tender following expression of interest in this opportunity. TUNNELLING & DRILLING WORKS Lot 1B - PIPE RAMMING Pipe ramming is a trenchless method for horizontally installing steel pipes or casings under obstacles like roads, railways, and rivers by using a pneumatic hammer to drive an open-ended pipe into the ground, displacing soil outwards. This technique is typically used to cross under embankments, road, rail and river links. Lot 2B - THRUST BORING Thrust boring is a trenchless method for installing pipes and conduits (like for utilities) underground without open digging, using a rotating auger inside a steel casing to excavate soil while hydraulic jacks push the casing forward, ideal for going under roads, railways, or buildings. It's a cost-effective, dependable technique for short to medium distances, creating a bore for the final pipe or cable installation, and minimizing surface disruption. Pipe Diameter mm (host pipe internal diameter) = 25 -1000 Lot 3B - HORIZONTAL DIRECTIONAL DRILLING (25-630) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 25-630 Lot 4B - HORIZONTAL DIRECTIONAL DRILLING (630-1200) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 630-1200 Lot 5B - HORIZONTAL DIRECTIONAL DRILLING ROCK DRILLING (50-500) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 50-500 Lot 6B - TIMBER HEADING A timber heading is a traditional, hand-dug tunnelling method using timber supports (sets, headboards, sideboards) to create a safe, short tunnel for installing pipes or cables, especially under busy roads or structures, avoiding major disruption by building around existing underground services. Headings are generally temporary structures where it is not required or economic to provide a more substantial structure. Pipe Diameter mm (host pipe internal diameter) = 1000-1500 Lot 7B - MICRO TUNNELLING Micro Tunnelling is a trenchless construction method for installing non man-entry size pipelines that uses a remotely operated, small-diameter tunnel boring machine (MTBM) to excavate underground while simultaneously jacking pipes into place, allowing for precise installation of utility tunnels (like sewers, cables, and conduits) without disturbing the surface above. It's ideal for crossings under railways, roads, and rivers, as it minimizes disruption. Pipe Diameter mm (host pipe internal diameter) = 250-1200 Lot 8B - AUGER BORING Auger Boring is a trenchless construction method that installs pipes or conduits underground by using a rotating helical screw (auger) inside a steel casing to excavate soil, pushing the casing forward and pulling spoil back to a launch pit. It's used to create stable, horizontal tunnels under obstacles like roads, railways, or rivers, minimizing surface disruption and traffic interruption, often called \"dry boring\" because it doesn't use liquid slurry. Pipe Diameter mm (host pipe internal diameter) = 50-1500 Lot 9B - DIRECT PIPE Direct Pipe is a trenchless technology that combines micro tunnelling and horizontal directional drilling (HDD) to install pipelines in a single step. It allows for the direct installation of pre-fabricated pipelines without the need for separate pilot hole drilling or pipe stringing, as is common in HDD. Pipe Diameter mm (host pipe internal diameter) = 90-710 Lot 10B - PIPE JACKING Pipe Jacking is a technique for installing man-entry size pipelines using a steerable tunnelling shield (similar to micro tunnelling, which is for non man-entry sized pipes). Typically the pipes are jacked from a drive shaft or pit behind a suitable shield. The pipes are installed using hydraulically powered rams which push off a jacking wall constructed within the drive shaft. Pipe Diameter mm (host pipe internal diameter) = 1200-3000 Lot 11B - SEGMENTAL TUNNELLING Segmental Tunnelling is the technique of forming an underground excavation using individual segments or rings by hand or mechanical means and providing a suitable supporting structure such that the excavation forms a permanent, stable and secure opening for the tunnel. Pipe Diameter mm (host pipe internal diameter) = 1500-14000 SHAFT WORKS For Lots 12B to 17B Interested parties are to note Bidders cannot bid for a Shaft Lot in isolation, Bidders must have capability to undertake associated tunnelling and or drilling works. See Tunnelling & Drilling Lots 1B to 11B. - All Shafts are concrete - Shaft Diameter Range (nominal internal diameter ms) = 2.44 to 25. - Shaft Depth Range (ms) = 5 to 25. Lot 12B - UNDER PINNING (FREE AIR) Lot 13B - UNDER PINNING COMPRESSED AIR) Lot 14B - OPEN CAISSON WET Lot 15B - OPEN CAISSON DRY Lot 16B - SHEET PILED PITS Lot 17B - TIMBER SHAFTS",
                "status": "active",
                "value": {
                    "amountGross": 360000000,
                    "amount": 300000000,
                    "currency": "GBP"
                },
                "awardCriteria": {
                    "criteria": [
                        {
                            "type": "quality",
                            "name": "Quality",
                            "numbers": [
                                {
                                    "number": 100,
                                    "weight": "percentageExact"
                                }
                            ]
                        }
                    ]
                },
                "secondStage": {
                    "minimumCandidates": 5,
                    "maximumCandidates": 7
                },
                "selectionCriteria": {
                    "criteria": [
                        {
                            "description": "Post Advert the tender process will consist of; A PQQ (Prequalification Questionnaire) - Technical Assessment only. The PQQ stage is designed to help the Utilities identify and shortlist bidders who meet the minimum capability and compliance requirements for the scope outlined. Bidder's responses will be scored out of an aggregate score of 74 not 100. 26 being reserved for assessment where the bidder selects to undertake works as Principal Designer & Contractor. Shortlisted bidders will be invited to submit an RFP (Request for Proposal). An RFP (Request for Proposal) - Technical/Commercial/Price Assessment. Shortlisted bidders from the PQQ stage will be invited to submit detailed proposals on how they will deliver the requirement(s). These proposals will be evaluated and scored to determine the bidder(s) offering the best overall value for the contract and subsequent appointment to the framework. Bidders responses will be scored out of an aggregate score of 100. Split by; 70% Technical 30% Price The approach to evaluation and shortlisting is described in the Tender Briefing Packs.",
                            "forReduction": true
                        }
                    ]
                },
                "suitability": {
                    "sme": true
                },
                "contractPeriod": {
                    "startDate": "2026-09-30T00:00:00+01:00",
                    "endDate": "2038-09-29T23:59:59Z",
                    "maxExtentDate": "2041-03-30T23:59:59Z"
                },
                "hasRenewal": true,
                "renewal": {
                    "description": "Initial Term 12 years with option to extend for a further 3 years in 1 year increments. (12+1+1+1)"
                },
                "hasOptions": true,
                "options": {
                    "description": "Initial Term 12 years with option to extend for a further 3 years in 1 year increments. (12+1+1+1)"
                }
            },
            {
                "id": "2 DB",
                "title": "Design & Build - Tunnelling, Drilling & Shaft Works",
                "description": "Design & Build - Tunnelling, Drilling & Shaft Works The Lots ending \"DB\" require the contractor to deliver the works as Principal Designer and Principal Contractor. Interested parties will have the opportunity to select the specific Lots they want to undertake when invited to tender following expression of interest in this opportunity. TUNNELLING & DRILLING WORKS Lot 1DB - PIPE RAMMING Pipe ramming is a trenchless method for horizontally installing steel pipes or casings under obstacles like roads, railways, and rivers by using a pneumatic hammer to drive an open-ended pipe into the ground, displacing soil outwards. This technique is typically used to cross under embankments, road, rail and river links. Lot 2DB - THRUST BORING Thrust boring is a trenchless method for installing pipes and conduits (like for utilities) underground without open digging, using a rotating auger inside a steel casing to excavate soil while hydraulic jacks push the casing forward, ideal for going under roads, railways, or buildings. It's a cost-effective, dependable technique for short to medium distances, creating a bore for the final pipe or cable installation, and minimizing surface disruption. Pipe Diameter mm (host pipe internal diameter) = 25 -1000 Lot 3DB - HORIZONTAL DIRECTIONAL DRILLING (25-630) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 25-630 Lot 4DB - HORIZONTAL DIRECTIONAL DRILLING (630-1200) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 630-1200 Lot 5DB - HORIZONTAL DIRECTIONAL DRILLING ROCK DRILLING (50-500) Horizontal Directional Drilling (HDD) is a trenchless method for installing underground pipelines, cables, or conduits by drilling a precise, curved path from a surface rig, avoiding open trenches to minimize disruption to roads, rivers, and sensitive environments. The process involves drilling a small pilot hole, enlarging it with a reamer, and then pulling the product pipe or cable through the enlarged bore. Pipe Diameter mm (host pipe internal diameter) = 50-500 Lot 6DB - TIMBER HEADING A timber heading is a traditional, hand-dug tunnelling method using timber supports (sets, headboards, sideboards) to create a safe, short tunnel for installing pipes or cables, especially under busy roads or structures, avoiding major disruption by building around existing underground services. Headings are generally temporary structures where it is not required or economic to provide a more substantial structure. Pipe Diameter mm (host pipe internal diameter) = 1000-1500 Lot 7DB - MICRO TUNNELLING Micro Tunnelling is a trenchless construction method for installing non man-entry size pipelines that uses a remotely operated, small-diameter tunnel boring machine (MTBM) to excavate underground while simultaneously jacking pipes into place, allowing for precise installation of utility tunnels (like sewers, cables, and conduits) without disturbing the surface above. It's ideal for crossings under railways, roads, and rivers, as it minimizes disruption. Pipe Diameter mm (host pipe internal diameter) = 250-1200 Lot 8DB - AUGER BORING Auger Boring is a trenchless construction method that installs pipes or conduits underground by using a rotating helical screw (auger) inside a steel casing to excavate soil, pushing the casing forward and pulling spoil back to a launch pit. It's used to create stable, horizontal tunnels under obstacles like roads, railways, or rivers, minimizing surface disruption and traffic interruption, often called \"dry boring\" because it doesn't use liquid slurry. Pipe Diameter mm (host pipe internal diameter) = 50-1500 Lot 9DB - DIRECT PIPE Direct Pipe is a trenchless technology that combines micro tunnelling and horizontal directional drilling (HDD) to install pipelines in a single step. It allows for the direct installation of pre-fabricated pipelines without the need for separate pilot hole drilling or pipe stringing, as is common in HDD. Pipe Diameter mm (host pipe internal diameter) = 90-710 Lot 10DB - PIPE JACKING Pipe Jacking is a technique for installing man-entry size pipelines using a steerable tunnelling shield (similar to micro tunnelling, which is for non man-entry sized pipes). Typically the pipes are jacked from a drive shaft or pit behind a suitable shield. The pipes are installed using hydraulically powered rams which push off a jacking wall constructed within the drive shaft. Pipe Diameter mm (host pipe internal diameter) = 1200-3000 Lot 11DB - SEGMENTAL TUNNELLING Segmental Tunnelling is the technique of forming an underground excavation using individual segments or rings by hand or mechanical means and providing a suitable supporting structure such that the excavation forms a permanent, stable and secure opening for the tunnel. Pipe Diameter mm (host pipe internal diameter) = 1500-14000 SHAFT WORKS For Lots 12DB to 17DB Interested parties are to note Bidders cannot bid for a Shaft Lot in isolation, Bidders must have capability to undertake associated tunnelling and or drilling works. See Tunnelling & Drilling Lots 1DB to 11DB. - All Shafts are concrete - Shaft Diameter Range (nominal internal diameter ms) = 2.44 to 25. - Shaft Depth Range (ms) = 5 to 25. Lot 12DB - UNDER PINNING (FREE AIR) Lot 13DB - UNDER PINNING COMPRESSED AIR) Lot 14DB - OPEN CAISSON WET Lot 15DB - OPEN CAISSON DRY Lot 16DB - SHEET PILED PITS Lot 17DB - TIMBER SHAFTS",
                "status": "active",
                "value": {
                    "amountGross": 1080000000,
                    "amount": 900000000,
                    "currency": "GBP"
                },
                "awardCriteria": {
                    "criteria": [
                        {
                            "type": "quality",
                            "name": "Quality",
                            "numbers": [
                                {
                                    "number": 100,
                                    "weight": "percentageExact"
                                }
                            ]
                        }
                    ]
                },
                "secondStage": {
                    "minimumCandidates": 5,
                    "maximumCandidates": 7
                },
                "selectionCriteria": {
                    "criteria": [
                        {
                            "description": "Post Advert the tender process will consist of; A PQQ (Prequalification Questionnaire) - Technical Assessment only. The PQQ stage is designed to help the Utilities identify and shortlist bidders who meet the minimum capability and compliance requirements for the scope outlined. Bidder's responses will be scored out of an aggregate score of 100. Shortlisted bidders will be invited to submit an RFP (Request for Proposal). An RFP (Request for Proposal) - Technical/Commercial/Price Assessment. Shortlisted bidders from the PQQ stage will be invited to submit detailed proposals on how they will deliver the requirement(s). These proposals will be evaluated and scored to determine the bidder(s) offering the best overall value for the contract and subsequent appointment to the framework. Bidders responses will be scored out of an aggregate score of 100. Split by; 70% Technical 30% Price Calling Works Off Under the Framework Works will be called off under the framework via mini competition. A breakdown of the award criteria being; Technical 60% - Price - 40%. The approach to evaluation and shortlisting is described in the Tender Briefing Packs.",
                            "forReduction": true
                        }
                    ]
                },
                "suitability": {
                    "sme": true
                },
                "contractPeriod": {
                    "startDate": "2026-09-30T00:00:00+01:00",
                    "endDate": "2038-09-29T23:59:59Z",
                    "maxExtentDate": "2041-03-30T23:59:59Z"
                },
                "hasRenewal": true,
                "renewal": {
                    "description": "Initial Term 12 years with option to extend for a further 3 years in 1 year increments. (12+1+1+1)"
                },
                "hasOptions": true,
                "options": {
                    "description": "Initial Term 12 years with option to extend for a further 3 years in 1 year increments. (12+1+1+1)"
                }
            }
        ],
        "lotDetails": {
            "awardCriteriaDetails": "Interested parties will have the opportunity to select the specific Lots they want to undertake when invited to tender following expression of interest in this opportunity. Bidders can select one or multiple lots for either Build and or Design & Build works."
        },
        "documents": [
            {
                "id": "conflictOfInterest",
                "documentType": "conflictOfInterest",
                "description": "Not published"
            },
            {
                "id": "031005-2026",
                "documentType": "tenderNotice",
                "noticeType": "UK4",
                "description": "Tender notice on Find a Tender",
                "url": "https://www.find-tender.service.gov.uk/Notice/031005-2026",
                "datePublished": "2026-04-02T14:57:05+01:00",
                "format": "text/html"
            }
        ]
    },
    "language": "en"
}