The league tables are compiled using Barbour ABI data on contracts awarded and a survey of over 100 of the largest contractors. The project values for architect and QS league tables is based on Barbour ABI contract data. The figures include contracts worth £100k or more, and all work awarded by negotiation or competitive tender unless stated.
This information is compiled by Barbour ABI. To contact, call 0151-3533 500, email email@example.com or visit barbour-abi.com
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