How we select the top construction companies in Wales
We’ve curated the Barbour ABI data to bring you the top construction companies in Wales in 2026. This includes the top contractors by total value of projects across all sectors with a start date 6 months back, and 6 months forward. We track tier 1 contractor and subcontractor activity across the UK.
McLaren Construction Limited is Top Construction Company in Wales
According to Barbour ABI planning data, McLaren Construction Limited is the top construction company in Wales with two projects valued at £321m. In joint second place is Aureos Infrastructure Services Limited and Graham Construction Limited each with one project valued at £200m. Morgan Sindall Group takes third place in the top construction companies in Wales with eight projects valued at £189m.
Last updated: February 2026
Top Construction Companies 2026
Regional Tables: United Kingdom | London | South East | South West | East of England | East Midlands | West Midlands | Northern Ireland | North West | Yorkshire & the Humber | North East | Scotland
City and County Tables: Aberdeen | Birmingham | Bristol | Cheshire East | Cheshire West & Chester | East Sussex | West Sussex | Essex | Hampshire | Hertfordshire | Leeds | Liverpool | Manchester | Newcastle-Upon Tyne | Norwich | Nottingham | Sheffield | South Yorkshire | West Yorkshire
| Position | Contractor | Project Count | Total Project Value | View Projects |
|---|---|---|---|---|
| 1 | McLaren Construction Limited | 2 | £ 321,000,000 | View Projects |
| 2 | Aureos Infrastructure Services Limited | 1 | £ 200,000,000 | View Projects |
| 3 | Graham Construction Limited | 1 | £ 200,000,000 | View Projects |
| 4 | Morgan Sindall Group | 8 | £ 188,742,500 | View Projects |
| 5 | BAM Construction | 3 | £ 174,500,000 | View Projects |
| 6 | Barratt Homes | 7 | £ 147,110,000 | View Projects |
| 7 | FI Real Estate Management | 3 | £ 103,140,000 | View Projects |
| 8 | Wynne Construction | 7 | £ 95,073,474 | View Projects |
| 9 | Andrew Scott Limited | 12 | £ 90,300,000 | View Projects |
| 10 | Castle Green Homes | 4 | £ 81,080,000 | View Projects |
| 11 | Goldbeck Construction Limited | 2 | £ 76,000,000 | View Projects |
| 12 | MTX Contracts Limited | 2 | £ 66,452,500 | View Projects |
| 13 | Taylor Wimpey | 2 | £ 52,280,000 | View Projects |
| 14 | Willmott Dixon Holdings Limited | 6 | £ 50,500,000 | View Projects |
| 15 | Commercial Development Projects Limited | 1 | £ 45,849,000 | View Projects |
| 16 | Avant Homes Wales | 1 | £ 42,000,000 | View Projects |
| 17 | Persimmon Homes (East Yorkshire) Limited | 2 | £ 38,300,000 | View Projects |
| 18 | Jones Brothers Ruthin (Civil Engineering) Limited | 5 | £ 36,660,000 | View Projects |
| 19 | Countryside Properties (UK) Limited | 1 | £ 35,640,000 | View Projects |
| 20 | Bouygues UK Limited | 1 | £ 35,000,000 | View Projects |
| 21 | Edenstone Homes (Western) Limited | 3 | £ 33,240,000 | View Projects |
| 22 | Anwyl Construction Company Limited | 2 | £ 32,580,000 | View Projects |
| 23 | BioConstruct GmbH | 1 | £ 30,000,000 | View Projects |
| 24 | Glencar Construction Limited | 1 | £ 30,000,000 | View Projects |
| 25 | Greenvolt Next Ireland | 1 | £ 30,000,000 | View Projects |
Top Construction Companies across the UK
Barbour ABI tracks and reports on companies working on projects 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.
