Sellafield Limited is Top Company in Construction in North West
We’ve curated the Barbour ABI data to bring you the top companies in construction in the North West region. This includes the top contractors, architects and clients by total value of projects across a 12-month period.
The latest data for the top North West companies in construction shows client Sellafield Limited in first place with six projects valued at £3.5bn. Second place is client Cumberland Council with 41 projects valued at £1.6bn. In third place is the client Kingmoor Park Properties Limited with two projects valued at £1.5bn.
Top Construction Companies 2025
Regional Tables: United Kingdom | London | South East | South West | East of England | Manchester | East Midlands | West Midlands | Northern Ireland | Wales | Yorkshire & the Humber | North East | Scotland
| Position | Company | Role | Number of Projects | Total Value | Company ID | View Projects |
|---|---|---|---|---|---|---|
| 1 | Sellafield Limited | Client | 6 | £ 3,451,727,754 | 3361422 | View project |
| 2 | Cumberland Council | Client | 41 | £ 1,615,748,368 | 200363 | View project |
| 3 | Kingmoor Park Properties Limited | Client | 2 | £ 1,512,000,000 | 3264324 | View project |
| 4 | The Department Of Health | Client | 2 | £ 1,502,500,000 | 2053104 | View project |
| 5 | Mid Cheshire Hospitals NHS Trust | Client | 2 | £ 1,500,720,000 | 1111451 | View project |
| 6 | National Nuclear Laboratory | Client | 2 | £ 1,500,575,000 | 5169140 | View project |
| 7 | Rolls Royce Plc | Client | 2 | £ 1,500,228,000 | 3152860 | View project |
| 8 | Assystem | Client | 1 | £ 1,500,000,000 | 5369555 | View project |
| 9 | AtkinsRéalis | Client | 1 | £ 1,500,000,000 | 100844 | View project |
| 10 | Holtec | Client | 1 | £ 1,500,000,000 | 5512041 | View project |
| 11 | Nuclear AMRC | Client | 1 | £ 1,500,000,000 | 5304151 | View project |
| 12 | The Welding Institute | Client | 1 | £ 1,500,000,000 | 4964726 | View project |
| 13 | Simpson Haugh & Partners | Architect | 8 | £ 1,071,700,000 | 3243494 | View project |
| 14 | UK Research and Innovation | Client | 7 | £ 962,055,034 | 5305451 | View project |
| 15 | United Utilities Plc | Client | 17 | £ 917,198,000 | 3225901 | View project |
| 16 | Renaker Build Limited | Client | 4 | £ 852,900,000 | 5047704 | View project |
| 17 | Renaker Build Limited | Contractor | 4 | £ 852,900,000 | 5047704 | View project |
| 18 | Sheppard Robson | Architect | 10 | £ 784,421,000 | 109667 | View project |
| 19 | GIA Limited | Architect | 5 | £ 752,700,000 | 105665 | View project |
| 20 | Vinci Construction UK Limited | Contractor | 9 | £ 745,500,000 | 3488376 | View project |
| 21 | Muse Developments | Client | 14 | £ 727,419,500 | 108138 | View project |
| 22 | AEW Architects & Designers | Architect | 42 | £ 670,992,980 | 5354428 | View project |
| 23 | DAY Architectural | Architect | 24 | £ 662,254,860 | 5095485 | View project |
| 24 | Stephen Levrant Heritage Architecture Limited | Architect | 2 | £ 650,000,000 | 5139564 | View project |
| 25 | AHR Building Consultancy Limited | Architect | 13 | £ 644,930,128 | 3119952 | View project |
| 26 | BDP | Architect | 18 | £ 591,250,000 | 104202 | View project |
| 27 | Graham Construction Limited | Contractor | 4 | £ 584,000,000 | 3353904 | View project |
| 28 | Salboy Limited | Client | 2 | £ 575,220,000 | 5227342 | View project |
| 29 | Shed KM | Architect | 5 | £ 568,150,000 | 5117622 | View project |
| 30 | Ministry of Justice | Client | 8 | £ 551,258,410 | 1123093 | View project |
(Source: Barbour ABI, updated October 2025)
League Tables from Barbour ABI
Barbour ABI tracks and reports on projects happening across the UK from pre-planning stages right through to completion. Our 3,000 happy clients use this data to supply their products and services on projects that are right for them, with the most up-to-date contact information available on the market.
Top Construction Projects
Access the top 100 construction projects happening in the UK. The projects are ranked by total value of projects across a 12-month period and can be filtered by sector, location, start date, value, and links straight to the Barbour ABI project leads platform. View the top construction projects overall in the UK as well as major regions and cities.
Tender League Tables
View the latest and hottest projects out to tender in the UK. Filter by value, location, number of bidders, start dates, and link straight to the Barbour ABI project leads platform to see the project in full detail. The Tender League Tables are separated by sector to give you the most insights on construction activity in your field.
Monthly Top 50 League Tables from Barbour ABI
Barbour ABI’s Top 50 League Tables is designed to provide company intelligence for those working within construction and beyond. We report on the top 50 clients, architects and contractors for the month, as well as the last 12 months.
We publish these league tables directly on our website each and every month for free.
