Gas mains replacement tenders and contracts
UK public sector, covering 600+ buyer sites
128 gas mains replacement tenders and contracts, 49 this year.
Updated 4 November 2026 · compiled by BidSkim Limited · How we count
- Awarded a month£570k
- Contracts a month1.4
- Won by SMEs18%
- Frameworks and DPSs3
- Live now4See them →
Gas mains replacement contracts
Tap a region to see its contracts. Pick as many as you like.
33 contracts across the UK, of any size
Live now
4 gas mains replacement opportunities are open now
- Pre-market27 Aug 2026LTC - SGN Diversionary Works Agreement ContractNational Highways · West Midlands
- Pre-market21 Aug 2026UKRI-6071 Underground Gas Network & Associated ServicesUK Research and Innovation (UKRI) · South EastEst.£1.7m
- OpenCloses Oct 2028
- Awarded19 Oct 2026St Fergus T3 ValvesNational Gas Transmission · ScotlandWon by United Living
- Awarded18 Sep 2026UKRI-6350 1894 Building ROE Site Gas and Water DiversionsUK Research and Innovation (UKRI) · ScotlandWon by Water and Pipeline Services LTD£198k
- Awarded26 Aug 2026LTC - SGN - Long Lead ItemsNational Highways · West MidlandsWon by SGN£3.1m
- Awarded26 Aug 2026LTC - Cadent Gas - Reimbursement and Implementation DeedNational Highways · West MidlandsWon by Cadent Gas Limited£46m
- Awarded20 Aug 2026Area 4 Southern Gas Networks Diversions- SGNNational Highways · South EastWon by Southern Gas Network£560k
- Awarded17 Aug 2026South Derbyshire Growth Zone - Cadent GasDerbyshire County Council · East MidlandsWon by Cadent Gas Limited£118k
- Awarded10 Aug 2026HMP Lewes Combined ProjectsMinistry of Justice · South EastWon by Galliford Try Infrastructure Limited
- Awarded27 Jul 2026Advanced Leakage Detection ServicesNorthern Gas Networks£4.3m
- Awarded30 Jun 2026Gas Main WorksPlymouth Community Homes · South WestWon by T Clarke Contracting£38k
- Awarded29 May 2026P26-0050: Scottish Enterprise Technology Park (SETP) - Gas Network WorksScottish Enterprise · ScotlandWon by Unit 2£669k
- Awarded14 May 2026Highways Infrastructure Works Gervis Place Bournemouth - GasBournemouth, Christchurch and Poole Council · South WestWon by SGN
- Awarded7 Apr 2026Phase Shifting TransformersSSE · South East
- Awarded16 Mar 2026Cadent Gas Diversionary WorksCity of Doncaster Council · Yorkshire and the HumberWon by Cadent Gas Limited£109k
- Awarded10 Mar 2026Diversion of Gas Mains - West WinchNorfolk County Council · East of EnglandWon by National Gas Transmission£22m
- Awarded23 Feb 2026TVCA-PROC-0777 - Gas Mains Diversion - Darlington StationTees Valley Combined Authority · North EastWon by Northern Gas works£85k
- Awarded13 Feb 2026TVCA-PROC-0777 - Gas Mains Diversion - Darlington StationTees Valley Combined Authority · North EastWon by Northern Gas works£85k
- Awarded10 Feb 2026TVCA-PROC-0777 - Gas Mains Diversion - Darlington StationTees Valley Combined Authority · North EastWon by Northern Gas works£85k
- Awarded17 Dec 2025Supply, Install & Commission of Odorant Injection SystemsNorthern Gas Networks · Yorkshire and the HumberWon by YZ Systems Ltd£3.5m
- Awarded28 Oct 2025FDIS - Woodbridge LPG Network Replacement (Design & Build) for 200 properties - FY2025/26 - Amey Central Region - EastAmey · East of EnglandWon by RJC (Mechanical)£2.6m
- Awarded8 Oct 2025618819 - Utility Diversion Park Lane Junction - Cadent GasNational Highways · South EastWon by Cadent Gas Limited£67k
- Awarded2 Oct 2025Gas Mains DiversionRing Stones Maintenance and Construction Limited · North WestWon by Cadent Gas Limited£33k
- Awarded10 Sep 2025Replacement of Gas Mains at Haydon Way, BatterseaSouthern Housing · LondonWon by Thermoserv Limited£384k
- Awarded2 Sep 2025PLACE930H V37871 - Somersall Lane FB Gas diversion worksDerbyshire County Council · East MidlandsWon by Cadent Gas Limited£57k
- Awarded21 Jul 2025Northern Gas Networks Apparatus DiversionStockton-on-Tees Borough Council · North EastWon by Northern Gas Networks£339k
- Awarded30 Jun 2025Gas diversion works for Rail Package TwoWest Midlands Combined Authority · West MidlandsWon by Cadent Gas Limited£54k
- Awarded29 Jun 2025Moseley Gas Works Rail Package Two - CANWest Midlands Combined Authority · West MidlandsWon by Cadent Gas Limited£45k
- Awarded18 May 2025supply and install new external gas main c/w new gas meter and GRP housingUniversity of the West of England Higher Education Corporation · South WestWon by H&V Fusion & Drilling Limited£56k
- Awarded6 May 2025NRW/21551 Disconnection of Gas to main Anglia Square siteNorwich City Council · East of EnglandWon by Cadent Gas Limited£94k
- Awarded6 May 2025NRW/21551 Disconnection of Gas to main Anglia Square siteNorwich City Council · East of EnglandWon by Cadent Gas Limited£94k
- Awarded20 Mar 2025Tunnelling Projects Austhorpe Lane & Ridge RoadNorthern Gas Networks · Yorkshire and the HumberWon by Barhale Limited and 1 more£1.4m
- Open to joinOpen nowUK-wide DPS
Where to bid
Where gas mains replacement tenders are run
Open (NEPO)2 50%
In-Tend1 25%- eSourcing NI1 25%
Tenders published in the last year that name the bid portal they run on.
Frameworks and DPS
3 frameworks and DPSs for gas mains replacement work are running. 1 is open to join now.
Cadent Gas Limited won the most gas mains replacement contracts
It also won the most by value. Each dot is one contract, coloured by who bought it.
CouncilsTransport and utilitiesCentral governmentHousingEducationOther buyers
| Rank | Contractor | Contracts won, by buyer | Contracts | Value won | Buyers | Share |
|---|---|---|---|---|---|---|
| 1 | Cadent Gas Limited East Midlands · See every contract | 12 | £50.3m | 8 | ||
| 2 | Northern Gas works North East · See every contract | 3 | £255k | 1 | ||
| 3 | SGN West Midlands · See every contract | 2 | £3.1m | 2 | ||
| 4joint | National Gas Transmission East of England · See every contract | 1 | £22m | 1 | ||
| 4joint | YZ Systems Ltd Yorkshire and the Humber · SME · See every contract | 1 | £3.5m | 1 | ||
| 4joint | RJC (Mechanical) East of England · SME · See every contract | 1 | £2.6m | 1 | ||
| 4joint | Barhale Limited Yorkshire and the Humber · See every contract | 1 | £682k | 1 | ||
| 4joint | Terra Solutions Yorkshire and the Humber · See every contract | 1 | £682k | 1 | ||
| 4joint | Southern Gas Network South East · See every contract | 1 | £560k | 1 | ||
| 4joint | Thermoserv Limited London · SME · See every contract | 1 | £384k | 1 |
8 more gas mains replacement contractors ranked. See the full ranking →
Win gas mains replacement contracts? Share your ranking.
Who buys
Councils award 45% of gas mains replacement contracts
Contracts with a published value in the last 2 years, from the type of buyer to the size of the contract.
7 buyers bought gas mains replacement more than once in the last 2 years
Each dot is a buyer, by how many gas mains replacement contracts it awarded in the last 2 years.
See who they are and when they usually buy →
Few and big, or many and small
Each dot is a buyer: how many gas mains replacement contracts it awarded against what they were worth. The busiest and biggest are named.
CouncilsTransport and utilitiesCentral governmentHousingEducationOther buyers
Top buyers by contracts awarded
| Rank | Buyer | Contracts | Value |
|---|---|---|---|
| 1 | National Highways | 4 | £49.7m |
| 2 | Northern Gas Networks | 3 | £9.2m |
| 3 | Tees Valley Combined Authority | 3 | £255k |
| 4 | Southern Housing | 2 | £668k |
| 5 | Norwich City Council | 2 | £188k |
| 6 | Derbyshire County Council | 2 | £175k |
| 7 | West Midlands Combined Authority | 2 | £98k |
| 8 | Norfolk County Council | 1 | £22m |
| 9 | Wirral Council | 1 | £3.6m |
| 10 | Amey | 1 | £2.6m |
65 gas mains replacement contracts awarded since 2021
- 82021
- 32022
- 152023
- 62024
- 152025
- 182026 so far
Prices
Half of gas mains replacement contracts are worth less than £118k
CouncilsTransport and utilitiesCentral governmentHousingEducationOther buyers
The 10 biggest gas mains replacement contracts
- National HighwaysCadent Gas Limited · 26 Aug 2026
- Norfolk County CouncilNational Gas Transmission · 10 Mar 2026
- Northern Gas NetworksWinner not published · 27 Jul 2026
- Wirral CouncilCadent Gas Limited · 20 Mar 2025
- Northern Gas NetworksYZ Systems Ltd · 17 Dec 2025
- National HighwaysSGN · 26 Aug 2026
- AmeyRJC (Mechanical) · 28 Oct 2025
- Northern Gas NetworksBarhale Limited, Terra Solutions · 20 Mar 2025
- Scottish EnterpriseUnit 2 · 29 May 2026
- National HighwaysSouthern Gas Network · 20 Aug 2026
Renewing contracts
No gas mains replacement contracts come up for renewal in the next 12 months
The 11 gas mains replacement contracts ending are one-off work, which is not re-let as it was.
Where and when
Where and when gas mains replacement contracts are awarded
Contracts by region and by month awarded. Click a region to filter the page.
FewerMore contracts
The regions as a table
| Region | Open now | Contracts | Value | Typical contract | Won the most | Bought the most | Renewing in 12 months |
|---|---|---|---|---|---|---|---|
| North East | 0 | 4 | £594k | £85k | Northern Gas works (3) | Tees Valley Combined Authority (3) | 0 |
| West Midlands | 1 | 4 | £49.2m | £1.6m | Cadent Gas Limited (3) | National Highways and West Midlands Combined Authority (2 each) | 0 |
| East of England | 0 | 4 | £24.7m | £1.3m | Cadent Gas Limited (2) | Norwich City Council (2) | 0 |
| South East | 1 | 4 | £627k | – | – | National Highways (2) | 0 |
| Yorkshire and the Humber | 0 | 3 | £5m | £1.4m | – | Northern Gas Networks (2) | 0 |
| East Midlands | 0 | 3 | £259k | £84k | Cadent Gas Limited (3) | Derbyshire County Council (2) | 0 |
| South West | 0 | 3 | £94k | – | – | – | 0 |
| Scotland | 0 | 3 | £867k | – | – | – | 0 |
| North West | 0 | 2 | £3.6m | – | Cadent Gas Limited (2) | – | 0 |
| London | 0 | 2 | £668k | – | – | Southern Housing (2) | 0 |
| Wales | 0 | 0 | Not published | – | – | – | 0 |
| Northern Ireland | 0 | 0 | Not published | – | – | – | 0 |
Often bought with gas mains replacement
Related services
Key findings
- £570k a month
of gas mains replacement contracts awarded.
Typical contract £379k x 1.5 contracts a month, last 12 months. - 1.4
gas mains replacement contracts are awarded in a typical month.
33 contracts in the last 2 years. - 3
frameworks and DPSs are running for gas mains replacement work.
1 open to join now. - 18%
of gas mains replacement contracts are won by SMEs.
As recorded by the buyer, on 28 award notices.
How many gas mains replacement tenders and contracts are there?
| Last 12 months | Since November 2021 | |
|---|---|---|
| Notices published | 49 | 128 |
| Contracts awarded | 19 | 58 |
12 gas mains replacement contracts and frameworks end in the next 12 months, 1 of them recurring services. In the last two years, 22 buyers awarded gas mains replacement contracts to 18 suppliers.
Source: Find a Tender, Contracts Finder, Public Contracts Scotland, Sell2Wales and eTendersNI, to 4 November 2026. By Seamus White. How we count
Questions
How many gas mains replacement contracts does the UK public sector award?
33 in the 2 years to 4 November 2026, from 22 public buyers.
How much is a typical public sector gas mains replacement contract worth?
The median is £118k, and 55% are worth less than £250k.
Who wins the most public sector gas mains replacement contracts?
Cadent Gas Limited won the most (12), and the most by value (£50.3m).
Which buyers award the most gas mains replacement contracts?
Councils award 45% of them.
Are there frameworks or DPSs for gas mains replacement work that are open to join?
3 frameworks and DPSs for gas mains replacement work are running. 1 is open to join now.
What is included
Installation, mains and service replacement, maintenance and emergency response on gas distribution networks.
- New gas network installation from a distribution main
- Mains and service replacement with excavation and reinstatement
- Network maintenance and emergency response
What is not included
- Gas pipework and servicing in buildings,