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Source: Glenigan | Last updated: 1st October 2026
The top construction project in Wales is the Padeswood CCS valued at £405,600,000.
2nd place - Cardiff Central Station Upgrade valued at £140,000,000.
3rd place - Cardiff Crossrail Phase 1 valued at £100,000,000.
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.
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.
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.
See the top 100 construction companies and the number and value of the projects they’re winning.
See the most valuable construction projects out to tender this year and see how you can get involved.
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