Every 12 months The Building Index analyses the monetary accounts of the main UK building firms.
This 12 months’s evaluate of the Most sensible 100 contractors is in accordance with an research of the firms’ most up-to-date monetary effects filed ahead of 30th June 2025. It’s printed within the drawing close September factor of The Building Index mag.
Combination turnover of the hundred firms this time reached £76.5bn, up by way of 7.3% in comparison to ultimate 12 months’s scores. As building output has now not grown that a lot in a 12 months, that build up in turnover can most effective be on the expense of smaller competition.
Extra important and heartening is the 57% enlargement in mixture pre-tax income in the most recent Most sensible 100, to only over £1.9bn.
Turnover grew at 69 of the Most sensible 100 firms – down from 78 ultimate 12 months – whilst pre-tax income greater at 68 firms this 12 months, up from 51 in 2024. Because of this, pre-tax benefit margins – calculated as benefit divided by way of turnover – greater considerably.
The typical pre-tax margin around the Most sensible 100 rose to two.4% this time, up from 1.9% for a similar cohort within the previous 12 months.
Cumbrian contractor and aggregates crew Thomas Armstrong recorded the most productive pre-tax margin, at 14.7%, forward of HW Martin on 12.2%. 3 different building companies – precast concrete specialist FP McCann, fit-out contractor Axis Europe and drywall specialist Stanmore – all additionally had benefit margins in double digits.
However 43 firms on this 12 months’s Most sensible 100 reported a pre-tax margin of beneath 2% and 16 of the ones have been in detrimental territory.
The 3 largest contractors within the Most sensible 100 are, as according to ultimate 12 months, Balfour Beatty, Morgan Sindall and Kier, whose pre-tax benefit margins of their 2024 monetary 12 months have been 2.6%, 3.8% and 1.7% respectively.
The 20 largest specialist contractors grew mixture turnover by way of 7.1% to almost £5.7bn, however general income for this crew fell 16.3% to £141.1m and the common pre-tax benefit margin shrank to at least one.9% from 2.3% throughout the similar firms a 12 months previous.
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