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Lower Thames Crossing Tunnels and Approaches is the top construction project in the UK

The top construction project in the UK is the Lower Thames Crossing Tunnels and Approaches valued at £10,200,000,000.

2nd place - A5 Western Transport Corridor - Section 2 valued at £1,700,000,000.

3rd place - Highways and Public Realm Contract valued at £1,250,000,000.

See the league table

What is the Top 100 Construction projects UK League Table?

The Top 100 construction projects league table shows you detailed information on the UK’s largest construction projects including name, sector, region and start date. Giving you the insight to contact new opportunities and win more business.

How we determine the top construction projects in the UK

The top construction projects league table is determined by an extensive research process. We use market leading technology, exclusive data, and ongoing media scanning to get sight of UK construction projects. Our team of 160 dedicated researchers then validate this data by making over 1 million phone calls a year and receiving 30,000 real-time information updates each day. This rigorous research process ensures quality and reliability. Making it the most accurate and up-to-date construction data available.

Other Top Construction Project League Tables by Region and City

Regional Tables: East Midlands East of England London North East Northern Ireland North West South East South West Scotland West Midlands Wales Yorkshire & The Humber
County & City Tables: Manchester Birmingham Liverpool Aberdeen Cardiff Nottingham Edinburgh

The Top 100 construction projects in the UK

Position Value Project Name Sector Region Start Date Project ID Projects
1 £10,200,000,000 Lower Thames Crossing Tunnels and Approaches Civil (Infrastructure) South East November 91161081 See project info
2 £1,700,000,000 A5 Western Transport Corridor - Section 2 Civil (Infrastructure) Northern Ireland February 09050276 See project info
3 £1,250,000,000 Highways and Public Realm Contract Civil (Infrastructure) London October 25089949 See project info
4 £1,200,000,000 Lower Thames Crossing Lot Two Kent Roads Contract Civil (Infrastructure) East of England June 22190541 See project info
5 £1,000,000,000 Project Reach Civil (Utilities) London January 21190978 See project info
6 £1,000,000,000 Highway Term Maintenance Contract 2026 Civil (Infrastructure) South East May 20107946 See project info
7 £996,660,000 Haweswater Aqueduct Resilience Programme – Haslingden & Walmersley Section Civil (Infrastructure) North West February 21226451 See project info
8 £750,000,000 Bidder Street Data Centre Offices / Commercial London April 22299265 See project info
9 £700,000,000 The British Library Extension Offices / Commercial London June 15291949 See project info
10 £700,000,000 Highways Term Maintenance Civil (Infrastructure) East of England April 24076020 See project info
11 £576,880,000 54 Marsh wall Private Housing London February 14317547 See project info
12 £500,000,000 A5 Western Transport Corridor Civil (Infrastructure) Northern Ireland March 8492109 See project info
13 £500,000,000 A5 Western Transport Corridor - Section 3 Civil (Infrastructure) Northern Ireland March 10031251 See project info
14 £483,330,000 Haweswater Aqueduct Resilience Programme - Marl Hill Section Civil (Utilities) North West November 19417883 See project info
15 £483,330,000 Haweswater Aqueduct Resilience Programme- Swarther Section Civil (Utilities) North West August 21306096 See project info
16 £480,000,000 Washwood Heath Depot and Network Integrated Control Centre Civil (Infrastructure) West Midlands November 11036747 See project info
17 £450,000,000 Crown Works Studios Offices / Commercial North East March 23063401 See project info
18 £450,000,000 Row One Offices / Commercial London February 18423376 See project info
19 £423,050,000 Meridian Water Phase 1B Private Housing London February 21035208 See project info
20 £400,000,000 Fallowfield Campus Redevelopment Social Housing North West February 23180716 See project info
21 £400,000,000 Dovetail Building Offices / Commercial London June 21354221 See project info
22 £400,000,000 G Park Docklands Data Centre- Building 1 LCY11 Offices / Commercial London February 23119996 See project info
23 £363,000,000 M5 Junction 10 Improvements Scheme Civil (Infrastructure) South West May 20170822 See project info
24 £363,000,000 Bramford to Twinstead Project Civil (Utilities) East of England May 10524764 See project info
25 £360,290,000 Epic Long Ashton Offices / Commercial South West January 23198474 See project info
26 £350,000,000 The Sage International Conference Centre Hotel & Leisure North East March 6021815 See project info
27 £340,000,000 M60/M62/M66 Simister Island Civil (Infrastructure) North West August 19342018 See project info
28 £330,000,000 60 Gracechurch Street Offices / Commercial London March 24112367 See project info
29 £300,000,000 Redcar Energy Centre Civil (Utilities) North East March 20214634 See project info
30 £300,000,000 Albert & Swedish Wharf Development Private Housing London March 14271580 See project info
31 £280,000,000 Brighton Gasworks/Brighton and Hove SHLAA URN 1 Social Housing South East March 19384031 See project info
32 £275,000,000 The Broadley Social Housing London February 21103886 See project info
33 £273,000,000 Dio SLA Wave 2a Community & Amenity East Midlands October 22163636 See project info
34 £257,000,000 Tay Crossing to Ballinluig Civil (Infrastructure) Scotland August 14156405 See project info
35 £250,000,000 New Town Quarter, Edinburgh/Edinburgh HLA URN 6330 Private Housing Scotland February 14128203 See project info
36 £250,000,000 Hill House Redevelopment Offices / Commercial London January 18063406 See project info
37 £245,000,000 Goods Station Hotel & Leisure West Midlands September 22020511 See project info
38 £220,000,000 1 Appold Street Offices / Commercial London November 23007268 See project info
39 £220,000,000 New Hospital Programme - Cambridge Cancer Research Hospital Health Infrastructure Plan 2 (HIP 2) Medical & Scientific East of England February 21561465 See project info
40 £208,000,000 North Hykeham Relief Road Civil (Infrastructure) East Midlands February 18312717 See project info
41 £207,910,000 Perryfields Road Development/Bromsgrove SHLAA URN BDC20 Private Housing West Midlands November 16190915 See project info
42 £200,000,000 Soapworks Private Housing South West March 19181845 See project info
43 £200,000,000 Earthcott Green Farm Civil (Utilities) South West January 23107786 See project info
44 £200,000,000 Immingham Eastern Ro-Ro Terminal Civil (Utilities) Yorkshire March 22125535 See project info
45 £200,000,000 Paddington Overstation Development - Triangle Development Site Offices / Commercial London April 05605615 See project info
46 £200,000,000 Tenter House Offices / Commercial London April 11151225 See project info
47 £200,000,000 Edge Liverpool Street Offices / Commercial London April 19267813 See project info
48 £200,000,000 65 Gresham Street Offices / Commercial London February 22373407 See project info
49 £200,000,000 Devonshire Place Private Housing London January 23081707 See project info
50 £193,860,000 Fountainbridge Phase-1 Development Private Housing Scotland January 19153246 See project info
51 £190,000,000 Granton Waterfront Phase 1 Private Housing Scotland January 03355787 See project info
52 £185,000,000 Leeds Urban Village/Leeds SHLAA URN 2000 Private Housing Yorkshire January 18135479 See project info
53 £180,000,000 Mossmorran Battery Energy Storage Civil (Utilities) Scotland February 25210077 See project info
54 £175,000,000 Temple Island Student Accommodation & Commercial Units Plot 2 Social Housing South West March 19258743 See project info
55 £167,760,000 Beaulieu Park Railway Station Private Housing South West February 22451711 See project info
56 £162,000,000 Carlisle Southern Link Road Hotel & Leisure Scotland January 16431401 See project info
57 £159,000,000 Atlantic Wharf Arena Phase 1 Community & Amenity West Midlands March 25027327 See project info
58 £155,000,000 Merck Building- London Discovery Research Centre Hotel & Leisure South West May 19075925 See project info
59 £152,000,000 Victoria Park Building Civil (Infrastructure) South West March 17002223 See project info
60 £150,000,000 SEGRO Logistics Park Northampton Gateway Plot 7 Medical & Scientific South East February 25265722 See project info
61 £150,000,000 Woolgate Exchange Social Housing South West February 23322897 See project info
62 £150,000,000 North and East Melton Mowbray Distributor Road Private Housing West Midlands March 21183024 See project info
63 £150,000,000 Future Hospital Phase 1, ProCure23 Offices / Commercial London March 14063057 See project info
64 £150,000,000 Edenica Offices / Commercial London July 17160090 See project info
65 £150,000,000 Wembley Housing Zone Civil (Infrastructure) London January 20141527 See project info
66 £150,000,000 Telford Offshore Wind Farm Private Housing London January 22221966 See project info
67 £150,000,000 Amersham Vent Shaft Headhouse-Buckinghamshire Private Housing London August 22373409 See project info
68 £147,270,000 Theatre Square Development Social Housing London August 24238548 See project info
69 £142,000,000 King Street, Blackpool - Talbot Gateway Phase 3 Civil (Utilities) Yorkshire January 23050644 See project info
70 £140,000,000 Beckton Railway Depot Offices / Commercial North West February 20319725 See project info
71 £140,000,000 No.3 Circle Square Offices / Commercial North West June 25504200 See project info
72 £140,000,000 Pentre Awel Phase 1 - LWLSV Education London February 23073180 See project info
73 £138,020,000 M27, Junction 10 Private Housing North West February 22000656 See project info
74 £138,000,000 Dockside Social Housing West Midlands April 25210104 See project info
75 £137,250,000 Brent Highway Maintenance Contract Civil (Utilities) Yorkshire March 18008747 See project info
76 £136,080,000 Riverside Business Centre Development Private Housing North West January 19003580 See project info
77 £136,000,000 A2Dominion Planned Works Social Housing East of England January 21366799 See project info
78 £135,000,000 LON01B2 Data Centre Civil (Infrastructure) Yorkshire January 23257725 See project info
79 £132,210,000 Image Business Park - Site 2 Private Housing East Midlands February 20313172 See project info
80 £130,820,000 East End Community Cam Offices / Commercial London October 22276673 See project info
81 £130,000,000 Oxford Brookes University Headington Hill Buildings Private Housing West Midlands January 21291011 See project info
82 £129,040,000 The Island Quarter - Phase 2 Nottingham Offices / Commercial West Midlands March 23122303 See project info
83 £128,690,000 Vectura- Inhalation Centre of Excellence Private Housing Scotland January 21422758 See project info
84 £125,800,000 Plot 4000 Gateway Stowmarket Offices / Commercial London February 21456480 See project info
85 £125,000,000 International Quarter- Plots S1 & S11 Social Housing Yorkshire April 24277860 See project info
86 £125,000,000 Health & Wellbeing Academy Private Housing London February 14054984 See project info
87 £123,570,000 Draynes Farm - Phase 2 Private Housing London February 12171064 See project info
88 £122,970,000 The Bedelands Academy Social Housing Scotland February 20111307 See project info
89 £122,940,000 Galashiels Community Campus Private Housing Scotland May 22168052 See project info
90 £120,000,000 Hertfordshire Police Headquarters Redevelopment Education Scotland March 19316062 See project info
91 £120,000,000 Yaverland Sea Defence Education Scotland May 24338433 See project info
92 £118,000,000 Jenners Building Hotel Offices / Commercial North East February 22360875 See project info
93 £116,292,000 New Bridge Street Repositioning Private Housing London January 24108563 See project info
94 £114,800,000 Queen's Parade Civil (Infrastructure) South East April 25217237 See project info
95 £112,100,000 Prospero Ansty Plot 5 Private Housing London February 22439457 See project info
96 £110,880,000 Little Preston, Aylesford Offices / Commercial East Midlands February 20251749 See project info
97 £108,600,000 A28 Sturry Road Private Housing West Midlands May 22120594 See project info
98 £108,510,000 Millport Flood Protection Scheme Social Housing London October 21192467 See project info
99 £107,670,000 Vaux District - Sunderland Eye Infirmary Civil (Infrastructure) North West March 92433534 See project info
100 £107,190,000 Royal Crescent Development Private Housing London April 25373484 See project info
Source: Glenigan | Last updated: 1st October 2026

League Tables From Glenigan

Built on the most accurate and up-to-date construction data available, our league table data allows you to see which construction companies are winning the most work, which construction projects are the most valuable, and which are open for tender.

This insight allows you to identify and contact new construction opportunities, allowing you to win more business and succeed in your market.

Top Construction Companies

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