---
title: "Marine Survey Framework"
ocid: "ocds-h6vhtk-042bef"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-042bef"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-042bef.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-042bef.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "NATIONAL GRID UK LIMITED"
published: "2025-09-22"
---

# Marine Survey Framework

Buyer: NATIONAL GRID UK LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-042bef

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## Summary

The National Grid UK Limited, a prominent electricity and gas network company, has initiated a Marine Survey Framework procurement process under the Open Contracting Data Standard (OCDS) with the aim of supporting offshore cable laying and future hydrogen pipeline projects. As of 22 September 2025, the buying organisation is focused on the "Marine Survey Framework" tender, classified under marine survey services (CPV code: 71354500). This framework is integral to the Great Grid Upgrade and spans various UK and international regions, including BE, DK, FR, DE, IS, IE, NL, NO, ES, and SE. The procurement stage recently reached the award conclusion, with the announcement of contracts on 16 June 2025. The ongoing framework will adhere to UK and international standards, such as IHO S44, EUNIS, and MEDIN, for data and metadata compliance.

This tender offers significant opportunities for businesses specialising in geophysical, geotechnical, environmental, intertidal/landing, and unexploded ordnance surveys, among others. The procurement method used was a selective, negotiated procedure with prior competition, which allowed for direct engagement with interested suppliers. Funding worth up to £250 million and potential contract renewals offer extensive prospects for companies in this sector. Businesses leveraging novel, sustainable technologies, such as autonomous vessels, which align with National Grid's climate targets, are particularly well-positioned to participate in this strategic framework. The tender encourages robust carbon footprint reporting and project footprint reduction, catering to entities capable of providing comprehensive survey services nationally and internationally.

## Notice

National Grid is an international Electricity and Gas Network Company based in the UK, with operations in north-eastern US. And one of the largest investor-owned energy companies in the world. National Grid are looking to set up a multi-year Marine Survey Framework to service offshore cable laying as part of the Great Grid Upgrade and may be utilised in the future for any Hydrogen Pipeline projects as applicable. The Framework will cover the full gamut of survey disciplines required for cable lay and subsequent maintenance. Including Geophysical, Geotechnical, Environmental, Intertidal/landing, Unexploded Ordinance, Maintenance with flexibility to award Turnkey requirements. The Framework is seen as being an important part of National Grid's maritime requirements to allow for a more rapid contracting of surveys potentially in parallel with other project elements that traditionally have been programmed sequentially. All data and associated metadata resulting from these surveys will be required to fall in line with relevant UK and international standards such as IHO S44, EUNIS and MEDIN to enable data archiving and sharing as required. Page 4 to 37 National Grid has committed in our Climate Transition Plan to achieve close to zero emissions by 2050 and science based intermediary targets aligned to a 1.5 degree pathway for our UK Electricity Transmission, System Operator and Distribution businesses. To achieve this ambitious target, we need to ensure all our suppliers are on a similar path and this Framework will look to leverage novel and autonomous technologies to achieve this. The Framework will look to incentivise companies on the Framework to reduce the project footprint where possible. All projects will also require the companies to provide accurate carbon footprint reporting. To register your interest in this Procurement event and to obtain the pre-qualification documentation applicants are to email: box.gp.ukbuyerngv@nationalgrid.com using the wording 'Registering Interest for Marine Survey Framework (if you have them) your Ariba AN number (Network ID), name, email address and contact phone number for all contacts within your organisation who will need to receive Ariba messages and administer your online submissions. Following receipt of this information National Grid will invite you to the Ariba event where all the pre-qualification documentation is contained including further instructions. Please note if you have already engaged with us as part of our market engagement and Request for Information activities, National Grid may already have invited you to the Ariba Event upon launch of the tender.

### Lot Information

Lot 1 - Geophysical

Non-intrusive surveys generally for route development along a corridor of seabed, including the collection, processing, reporting and delivery of bathymetric data; seabed classification and detection of objects with dimensions of 0.25m and larger; identification and characterisation of the sub-sea floor to around 25m depth; sub-surface measurements at landfall and detection of larger scale anthropomorphic magnetic anomalies such as pipelines and wrecks. This lot may also be used for maintenance where deemed necessary due to the scale or technical requirements. Collection methods are not limited to but currently utilise Single and Multi-beam Echo Sounders, Side Scan Sonars, Sub-Bottom Profilers, seismic refraction equipment and Magnetometers. ROV work utilising equipment mentioned above, video and pipe trackers may also be required where existing assets are being crossed or where maintenance work requires larger assets to be deployed. Additional information: Non-intrusive surveys generally for route development along a corridor of seabed, including the collection, processing, reporting and delivery of bathymetric data; seabed classification and detection of objects with dimensions of 0.25m and larger; identification and characterisation of the sub-sea floor to around 25m depth; sub-surface measurements at landfall and detection of larger scale anthropomorphic magnetic anomalies such as pipelines and wrecks. This lot may also be used for maintenance where deemed necessary due to the scale or technical requirements. Collection methods are not limited to but currently utilise Single and Multi-beam Echo Sounders, Side Scan Sonars, Sub-Bottom Profilers, seismic refraction equipment and Magnetometers. ROV work utilising equipment mentioned above, video and pipe trackers may also be required where existing assets are being crossed or where maintenance work requires larger assets to be deployed.

Renewal: Plus 2 years

Lot 2 - Geotechnical

Intrusive surveys to resolve the composition of the upper layers (5 to 10m) of seabed sediment along corridors already subject to a geophysical survey. Collection methods are not limited to, but currently utilise Core Penetration Tests and Vibrocorer sampling. This Page 9 to 37 work includes data collection from the landfall area to offshore. Nearshore, Intertidal and land elements may include the requirement for borehole testing to approximately 20m depth. A variety of companies are being sought that can offer coverage of all areas as well as those that may only offer a subset of the geographical scopes. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit Page 10 to 37 of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA Page 11 to 37 f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Renewal: Plus 2 years

Lot 3 - Environmental

Collection of data to establish the benthic ecology along chosen routes. Currently utilises the interpretation of acoustic geophysical data, video and photographic surveys of the benthic environment and benthic grab/core sampling, although other techniques such as eDNA sampling may be considered depending on the agreement of consent agencies. Laboratory testing of samples and subsequent reporting will be included with this work. This work includes data collection from the intertidal area to offshore. A variety of companies are being sought that can offer coverage of all areas as well as those that may only offer a subset of the geographical scopes. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc Page 14 to 37 b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Renewal: Plus 2 years

Lot 4 - Intertidal/Landing

Non-intrusive survey of the intertidal and topographic elements of the cable landing site utilising bathymetric/topographic lidar and imagery techniques to provide a continuous elevation model and classification of the seabed/land. It is expected that this will be from approximately from the 5m LAT depth contour to at least 250m inland but may extend further in both directions depending on project requirements. While it is expected that manned platforms will be required for some of this work, UAV operations for smaller area requirements may also be suitable. This work may include regular operation and maintenance surveys to assess the physical security of the cable in this zone. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited i) National Grid IFA 2 Limited Page 17 to 37 j) National Grid NSN Link Limited 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Renewal: Plus 2 years

Lot 5 UXO Route Survey

Collection of both land and marine detailed hi-resolution geophysical data to allow the provision of potential UXO targets to be identified. This will include a range of non-intrusive marine techniques including Multi-Beam Echo Sounders, Side Scan Sonars and Magnetometers but optimised for UXO detection and identification along a narrower route corridor. Land surveys will be in line with industry best practice currently utilising magnetometers only. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited Page 20 to 37 g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Renewal: 2 plus years

Lot 6 UXO Target Investigation. Nearshore Diving

Following the successful acquisition of UXO Survey data as described in Lot 5, target investigation on identified potential targets is required to confirm status. This nearshore scope is for water depths less than circa 10m where diving is the only practical solution to identify targets due to water depth. Visual identification and a target inspection report is required for each target. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited Page 23 to 37 d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does Page 24 to 37 not cause them to be subject to those rules in whole or in part.

Renewal: 2 plus years

Lot 7 UXO Target Investigation: Offshore ROV

Following the successful acquisition of UXO Survey data as described in Lot 5, target investigation on identified potential targets is required to confirm status. This nearshore scope is for water depths greater than circa 10m where an ROV solution is possible to identify targets due to sufficient water depth. Visual identification and an inspection report is required for each target. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: Page 26 to 37 a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. Page 27 to 37 It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Renewal: 2 plus years

Lot 8 UXO Clearance/Detonation

Following the confirmed identification of UXO from Lot 5-7, it is requested that a solution is presented to safely neutralise the ordnance using best industry practice to allow a clearance certificate to be produced. Techniques may include detonation, low-order detonation, Page 28 to 37 removal, or other innovative solutions to safely remove the threat of the confirmed ordnance. The use of bubble curtains and other environmental mitigations may be required dependent on location and size of ordnance. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the Page 29 to 37 framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF Page 30 to 37 h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Renewal: 2 plus years

Lot 9 Low Carbon Geophysical / Small Maintenance Projects

A non-intrusive survey to provide an initial assessment of potential routes and assessment of the continued physical security of in-service subsea assets. It is expected that this will generally utilise Multi-Beam Echo Sounders and backscatter, as well as Side Scan Sonar and magnetometer for some projects. This work includes data collection from the intertidal area to offshore and involves a comparison of data from previous surveys. Autonomous platforms to reduce the carbon footprint of the operations would be considered for this work and other novel approaches aimed at reducing the carbon footprint of the projects are desirable. Additional information: National Grid UK Limited will conduct the procurement and enter into the framework agreement with the successfully appointed suppliers for its own benefit and for the benefit of the entities identified below. National Grid UK Limited or any of the following entities shall be entitled to call off from the framework agreement and enter into contracts resulting from the call off: 1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162 Companies Act 2006 except that references in that section to "majority" shall be replaced by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings of any such parent undertakings at the time of the call off including without limitation: a) National Grid Electricity Transmission Plc b) National Grid LionLink Limited c) National Grid Nautilus Limited d) National Grid Continental Limited e) National Grid Interconnector Holdings Limited f) National Grid Interconnectors Limited g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited i) National Grid IFA 2 Limited j) National Grid NSN Link Limited 2. Any entity that is acting as a project partner with any National Grid call off partner (identified in paragraph 1 above) and which calls off jointly with any such National Grid entity including, without limitation,: a) Scottish Hydro Electric Transmission Plc b) TenneT TSO B.V. c) TenneT TSO GmbH d) TenneT Offshore GmbH Page 33 to 37 e) Elia Asset NV/SA f) Energinet Eltransmission A/S g) Statnett SF h) Transmission system operators and other developers and/or operators of HVDC projects; and/or 3. Any special purpose vehicle, incorporated joint venture or contractual joint venture, between any of the parties identified in paragraphs 1 and 2 above. It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its subsidiaries whether current or future, which hold an interconnector licence, and National Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework agreement, and therefore entitled to call off under it, these entities are not subject to the Utilities Contracts Regulations 2016 or any other relevant procurement regime. These entities' participation in this procurement process and/or the framework agreement does not cause them to be subject to those rules in whole or in part.

Renewal: 2 years plus

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/058388-2025 |
| Notice type | Tender Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Negotiated procedure with prior call for competition |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Tender, Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 22 Sep 2025 |
| Submission deadline | 13 Feb 2024 |
| Future notice date | Not specified |
| Award date | 31 May 2025 |
| Contract period | Not specified |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £250,000,000 |
| Lots value | £250,000,000 |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Cancelled |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NATIONAL GRID UK LIMITED |
| Locality | LONDON |
| Post town | Central London |
| Postcode | WC2N 5EH |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI35 Westminster and City of London |
| Local authority | Westminster |
| Electoral ward | St James's |
| Westminster constituency | Cities of London and Westminster |
| Delivery location | TLC North East (England), TLD North West (England), TLE Yorkshire and The Humber, TLG West Midlands (England), TLK South West (England), TLL Wales, TLN Northern Ireland |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services

### Codes

- 71354500 - Marine survey services

## Release History

- 22 Sep 2025 at 09:45 - TenderUpdate - Tender Notice - https://www.find-tender.service.gov.uk/Notice/058388-2025
- 1 Sep 2025 at 20:15 - Award - Award Notice - https://www.find-tender.service.gov.uk/Notice/052973-2025
- 26 Mar 2024 at 15:57 - TenderUpdate - Tender Notice - https://www.find-tender.service.gov.uk/Notice/009870-2024
- 14 Feb 2024 at 11:49 - TenderUpdate - Tender Notice - https://www.find-tender.service.gov.uk/Notice/004900-2024
- 10 Jan 2024 at 11:18 - Tender - Tender Notice - https://www.find-tender.service.gov.uk/Notice/000756-2024

## Notice URLs

- http://www.ariba.com
- https://www.nationalgrid.com/

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-042bef. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-042bef.json.