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High-Pressure Isolation Equipment

NATIONAL GAS TRANSMISSION PLC

This public procurement record has 2 releases in its history.

Award

21 Jul 2026 at 13:36

UK6 - Contract Award Notice
Award

20 Jul 2026 at 09:00

UK5 - Transparency Notice
Summary of the contracting process

National Gas Transmission PLC procured high-pressure isolation equipment for its gas transmission network. The requirement covers a temporary pipeline isolation system and associated auxiliary equipment for under-pressure gas transmission activities, including high-consequence pipeline intervention. The equipment is intended to improve operational safety, enable effective pipeline isolation and protect asset integrity during intervention work. This is a goods requirement covering gas network equipment, including taps, cocks, valves and similar appliances. Delivery is across the United Kingdom. The work is relevant to manufacturers, technology owners and specialist suppliers of temporary pipeline isolation systems, high-pressure gas network equipment, pipeline intervention equipment and associated safety-critical components. It is particularly suited to businesses able to support operational requirements across a national gas transmission network.

The procurement has been awarded and the tender is complete. National Gas Transmission PLC made a direct award to T.D. Williamson (U.K.) Limited under Section 41 of the Procurement Act 2023, relying on Schedule 5, paragraph 5. The stated basis was that T.D. Williamson holds the relevant intellectual property and exclusive technology rights and is the sole supplier capable of meeting the defined operational requirement, with no reasonable alternative identified. The award date was 21 July 2026. The awarded value is £12,724,504.44 excluding tax, or £15,269,405.33 including tax. The contract period is 31 July 2026 to 31 December 2028. One lot was awarded, and signature was scheduled for 31 July 2026.

For competitors, this award demonstrates National Gas Transmission’s demand for specialist temporary pipeline isolation technology supporting safety-critical, under-pressure intervention on a transmission network. A credible future supplier would need proven capability in high-pressure pipeline isolation, associated valves and auxiliary equipment, and the operational reliability required for high-consequence work. Evidence of protecting asset integrity, controlling isolation risk and supporting safe intervention would be important. Suppliers should also understand the significance of proprietary technology and exclusive intellectual property rights in this procurement: a competing solution would need clearly demonstrable technical equivalence, operational suitability and the necessary rights or authorisations. Businesses with specialist gas network equipment manufacturing, engineering support and national-scale delivery capability are the closest fit.

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Notice Information

Notice Title

High-Pressure Isolation Equipment

Notice Description

The procurement is for the supply of temporary pipeline isolation system and associated auxiliary equipment to support under pressure gas transmission activities. The equipment will be used to support high-consequence pipeline intervention activities, enhancing operational safety, isolation and asset integrity across the National Gas Transmission network.

Procurement Information

National Gas intends to award this contract directly under Section 41 of the Procurement Act 2023, relying on Schedule 5, paragraph 5. National Gas has identified a requirement for a temporary pipeline isolation system capable of meeting its defined operational, safety and asset integrity requirements for high-consequence under-pressure gas transmission activities. T.D. WILLIAMSON (U.K.) LIMITED holds the relevant intellectual property rights and exclusive rights associated with the technology required to meet National Gas's defined operational requirement and is the sole supplier capable of providing the required solution. National Gas has concluded that there are no reasonable alternatives capable of meeting its defined operational requirement.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06ce67
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/068706-2026
Current Stage
Award
All Stages
Award

Procurement Classification

Notice Type
UK6 - Contract Award Notice
Procurement Type
Standard
Procurement Category
Goods
Procurement Method
Direct
Procurement Method Details
Direct award
Tender Suitability
Not specified
Awardee Scale
SME

Common Procurement Vocabulary (CPV)

CPV Divisions

39 - Furniture (incl. office furniture), furnishings, domestic appliances (excl. lighting) and cleaning products

42 - Industrial machinery

CPV Codes

39340000 - Gas network equipment

42130000 - Taps, cocks, valves and similar appliances

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
£12,724,504 £10M-£100M
Contracts Value
Not specified

Notice Dates

Publication Date
21 Jul 20262 months ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
21 Jul 20262 months ago
Contract Period
31 Jul 2026 - 31 Dec 2028 2-3 years
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Pending
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
NATIONAL GAS TRANSMISSION PLC
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
WARWICK
Postcode
CV34 6DA
Postcode Area
Coventry
Country
England
Major Region (ITL 1)
TLG West Midlands (England)
Basic Region (ITL 2)
TLG1 Herefordshire, Worcestershire and Warwickshire
Small Region (ITL 3)
TLG13 Warwickshire CC
Delivery Location
Not specified
Local Authority
Warwick
Electoral Ward
Warwick Myton & Heathcote
Westminster Constituency
Warwick and Leamington

Supplier Information

Number of Suppliers
1
Supplier Name

T.D. WILLIAMSON (U.K.) LIMITED

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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