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Despite ongoing concerns over economic fragility, geopolitical upheavals and even the legacy of Brexit, the financial health of the UK’s 100 leading construction firms appears to be improving. The challenges that remain are real, however, and in particular, the spectre of project delays is already looming. Steve Menary reports.

This year’s review of the Top 100 UK contractors is based on an analysis of the companies’ financial results filed up until the end of June 2025. A cursory glance at the main runners and riders reveals few surprises: Balfour Beatty returns to its customary number one position (having been elbowed into second place by Morgan Sindall last year) and the usual suspects – Kier, Wates, Laing O’Rourke, Mace etc – are still clustered at the top of the table.

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Data compiled by Company Watch.

Latest Rank By Turnover
Latest Rank By Profit
Company
Reporting Period
Latest Turnover (£m)
Previous Turnover (£m)
Change (%)
Latest Pre-tax Profit (£m)
Previous Pre-tax Profit (£m)
Latest Margin
Previous Margin
1 1 BALFOUR BEATTY Dec-24 8,234.00 7,993.00 3 214 244 2.6 3.1 2 2 MORGAN SINDALL GROUP Dec-24 4,546.20 4,117.70 10.4 171.9 143.9 3.8 3.5 3 8 KIER GROUP Jun-24 3,905.10 3,380.70 15.5 68.1 51.9 1.7 1.5 4 95 LAING O’ROURKE Mar-24 2,394.50 2,034.90 17.7 -19.3 -188.3 -0.8 -9.3 5 5 MACE Dec-23 2,356.80 1,936.50 21.7 85.4 51 3.6 2.6 6 76 WATES GROUP Dec-24 2,296.30 2,101.90 9.2 2.6 44.9 0.1 2.1 7 25 M GROUP (SERVICES) Mar-24 2,196.00 1,864.60 17.8 23.9 1.3 1.1 0.1 8 88 VINCI CONSTRUCTION HOLDING Dec-23 2,125.50 1,655.00 28.4 -6.4 -14.3 -0.3 -0.9 9 3 TARMAC TRADING Dec-23 2,006.90 1,996.40 0.5 168.1 125.9 8.4 6.3 10 4 AMEY UK Dec-24 1,876.80 1,836.20 2.2 126.7 97 6.8 5.3 11 19 GALLIFORD TRY HOLDINGS Jun-24 1,772.80 1,393.70 27.2 30.9 10.1 1.7 0.7 12 16 VOLKERWESSELS UK Dec-23 1,433.10 1,348.80 6.3 38.6 37.7 2.7 2.8 13 9 J MURPHY & SONS Dec-23 1,383.80 1,482.90 -6.7 66.8 44.6 4.8 3 14 7 BOWMER AND KIRKLAND Aug-24 1,290.90 1,242.40 3.9 68.7 53.4 5.3 4.3 15 6 SKANSKA UK Dec-24 1,270.10 1,328.60 -4.4 77.8 27.3 6.1 2.1 16 17 COSTAIN GROUP Dec-24 1,251.10 1,332.00 -6.1 36.5 30.9 2.9 2.3 17 10 BAM NUTTALL Dec-23 1,214.70 1,068.50 13.7 64.4 4.1 5.3 0.4 18 13 WILLMOTT DIXON HOLDINGS Dec-24 1,156.50 1,172.10 -1.3 46.8 -14.4 4.1 -1.2 19 40 JOHN GRAHAM HOLDINGS Mar-24 1,124.70 1,093.70 2.8 14.8 15.1 1.3 1.4 20 91 BAM CONSTRUCT & VENTURES UK Dec-23 1,071.10 982.3 9 -11.1 14.6 -1 1.5 21 11 RENEW HOLDINGS Sep-24 1,009.00 921.5 9.5 60.2 58.1 6 6.3 22 36 WINVIC GROUP Jan-24 958.8 1,217.40 -21.2 18.9 10.5 2 0.9 23 45 SIR ROBERT MCALPINE Oct-24 940.1 880.6 6.8 10.4 -104.6 1.1 -11.9 24 42 MCLAREN CONSTRUCTION GROUP Jul-24 924 964.2 -4.2 11.9 6.4 1.3 0.7 25 99 EQUANS REGENERATION Dec-23 907.7 926 -2 -38.9 -135.7 -4.3 -14.7 26 98 JRL GROUP HOLDINGS Dec-23 826.1 761.3 8.5 -35.7 13.3 -4.3 1.8 27 90 ROBERTSON GROUP (HOLDINGS) Jun-24 824.9 670.9 23 -9.7 16.3 -1.2 2.4 28 12 HILL HOLDINGS Mar-24 806.6 636.5 26.7 56 65.6 7 10.3 29 35 MULTIPLEX CONSTRUCTION EUROPE Dec-24 780 675.4 15.5 19.6 31 2.5 4.6 30 85 KELTBRAY GROUP Oct-23 689 527.9 30.5 -1.2 3.2 -0.2 0.6 31 67 MCLAUGHLIN & HARVEY Jun-24 664.3 460.4 44.3 5 -9.2 0.8 -2 32 38 NG BAILEY GROUP Feb-25 661.7 600.1 10.3 17.7 10.7 2.7 1.8 33 15 OCU GROUP Apr-24 610.6 454.5 34.4 43.8 46.2 7.2 10.2 34 28 DALKIA GROUP Dec-23 607.2 720.9 -15.8 21.5 11.8 3.5 1.6 35 22 CADDICK GROUP Aug-24 603.6 575 5 28.8 35.5 4.8 6.2 36 21 FM CONWAY (1) Mar-24 579.8 535.3 8.3 29.4 15.5 5.1 2.9 37 41 FERROVIAL CONSTRUCTION (UK) Dec-24 531.5 526.5 0.9 14.1 5.5 2.7 1 38 52 TILBURY DOUGLAS CONSTRUCTION Dec-24 518.6 492.8 5.2 8.2 2.8 1.6 0.6 39 53 NORTHSTONE (NI) Dec-23 512.5 540 -5.1 8.2 7.2 1.6 1.3 40 37 JN BENTLEY De-24 510.2 388.3 31.4 18.8 13.5 3.7 3.5 41 39 MCALEER & RUSHE CONTRACTS UK Dec-24 491.5 436.4 12.6 16 11 3.3 2.5 42 55 TCLARKE Dec-23 491 426 15.3 7.6 10.3 1.6 2.4 43 94 BOVIS CONSTRUCTION (EUROPE) Jun-24 471 509 -7.5 -16.4 11.9 -3.5 2.3 44 27 SEVERFIELD Mar-24 463.5 491.8 -5.8 23 27.1 5 5.5 45 31 OGILVIE GROUP Jun-24 460.9 377 22.2 20.9 16.4 4.5 4.3 46 49 STRUCTURETONE INTERNATIONAL Dec-24 434.8 284.6 52.7 9.2 4.7 2.1 1.7 47 81 READIE CONSTRUCTION Mar-23 421.1 345 22.1 1.7 5.5 0.4 1.6 48 14 FP MCCANN GROUP Dec-24 415.3 415.8 -0.1 46.1 41.9 11.1 10.1 49 69 GLENCAR CONSTRUCTION Sep-24 400.3 400.6 -0.1 4.7 3.4 1.2 0.9 Latest Rank By Turnover
Latest Rank By Profit
Company
Reporting Period
Latest Turnover (£m)
Previous Turnover (£m)
Change (%)
Latest Pre-tax Profit (£m)
Previous Pre-tax Profit (£m)
Latest Margin
Previous Margin
50 57 ARAGLIN HOLDINGS Sep-24 389.7 402.5 -3.2 6.5 0.7 1.7 0.2 51 48 HG CONSTRUCTION Dec-24 386.8 424.3 -8.8 9.5 6.4 2.5 1.5 52 43 MV KELLY May-24 385.2 420.1 -8.3 11.8 27.1 3.1 6.5 53 33 CLANCY GROUP HOLDINGS Mar-24 378.5 334.5 13.2 20.9 13.5 5.5 4 54 97 INTEGRAL UK Dec-23 362.4 351.6 3.1 -31.7 -14.5 -8.7 -4.1 55 84 WATKIN JONES Sep-24 362 413.2 -12.4 -0.31 -42.5 -0.1 -10.3 56 30 EMCOR GROUP (UK) Dec-24 333 350.9 -5.1 21.1 24 6.3 6.8 57 20 HENRY BOOT Dec-24 328.4 359.4 -8.6 30.7 37.3 9.3 10.4 58 100 BOUYGUES (UK) Dec-23 325.6 382.6 -14.9 -62.1 -41.9 -19.1 -11 59 63 WILLIAM HARE GROUP Dec-23 315.5 248.3 27.1 5.8 -0.9 1.8 -0.3 60 92 ARDMORE CONSTRUCTION Sep-23 313.1 415.4 -24.6 -14.1 2.8 -4.5 0.7 61 29 OHOB HOLDINGS Mar-24 313 348.3 -10.1 21.1 20.3 6.7 5.8 62 96 UNITED LIVING GROUP Mar-24 301.7 280.4 7.6 -26.4 0.5 -8.8 0.2 63 47 TSL Dec-23 296.7 455.3 -34.9 9.9 6.8 3.3 1.5 64 44 PHOENIX ME Sep-24 295.3 170.2 73.5 10.7 7.4 3.6 4.4 65 70 OCTAVIUS INFRASTRUCTURE Mar-24 276.7 215.4 28.4 4.7 3.9 1.7 1.8 66 54 STORY CONTRACTING HOLDINGS Mar-24 274.8 226.8 21.2 7.9 2.7 2.9 1.2 67 24 CCG (SCOTLAND) Mar-24 273 243.3 12.2 26.2 17.1 9.6 7 68 71 BRIGGS & FORRESTER GROUP Oct-24 271.6 212.5 27.8 4.6 2.7 1.7 1.3 69 93 COLAS Dec-23 267.6 244.2 9.6 -15.3 -2.2 -5.7 -0.9 70 18 HW MARTIN HOLDINGS Jul-24 267.2 247.8 7.8 32.5 8.2 12.2 3.3 71 59 RENAKER BUILD Oct-24 265.4 229.1 15.8 6.3 5 2.4 2.2 72 32 FORTH HOLDCO Aug-24 265.4 233.5 13.6 20.9 13.6 7.9 5.8 73 80 GILBERT-ASH Dec-23 262.8 262.4 0.2 1.9 4.3 0.7 1.6 74 79 GRATTE BROTHERS GROUP Mar-24 262.2 250.2 4.8 1.9 2 0.7 0.8 75 75 ESH HOLDINGS Dec-23 260.6 260.9 -0.1 3.1 2 1.2 0.8 76 51 ERITH HOLDINGS Sep-24 255.5 227.1 12.5 8.4 5.1 3.3 2.3 77 23 AXIS EUROPE Mar-24 249.5 244.3 2.1 27.5 21.2 11 8.7 78 60 DODD GROUP HOLDINGS Mar-24 249.4 206.7 20.7 6.3 4.1 2.5 2 79 65 SDC (HOLDINGS) Sep-24 247.7 229.6 7.9 5.4 4.2 2.2 1.8 80 62 BW WORKPLACE EXPERTS Dec-24 244 200.1 21.9 5.8 2.7 2.4 1.3 81 82 GMI CONSTRUCTION GROUP Sep-24 232.3 328.5 -29.3 1 0.9 0.5 0.3 82 61 ERIC WRIGHT GROUP Dec-23 232.3 168 38.2 5.9 7.1 2.5 4.2 83 58 RG CARTER CONSTRUCTION Dec-23 227.8 304.1 -25.1 6.3 1 2.8 0.3 84 86 ENERVEO Mar-24 218.4 256.7 -14.9 -1.7 -10.2 -0.8 -4 85 46 LINDUM GROUP Nov-24 198.8 186.2 6.8 10.3 8.1 5.2 4.4 86 66 EW BEARD Dec-24 198.4 179.4 10.5 5.2 4.3 2.6 2.4 87 78 RGCM Dec-23 198.1 223.4 -11.4 1.9 1.3 1 0.6 88 87 STRABAG UK Dec-24 196.9 135.1 45.8 -4.8 15.9 -2.4 11.8 89 83 HIGGINS GROUP Jul-24 195 144.2 35.3 0.3 -25.8 0.1 -17.9 90 89 DURKAN HOLDINGS Nov-24 191.9 171.7 11.7 -7.5 -3.9 -3.9 -2.3 91 73 NOVUS PROPERTY SOLUTIONS Dec-24 191.8 173.1 10.8 3.4 0.9 1.8 0.5 92 77 MICHAEL J LONSDALE Sep-22 191.2 176.2 8.5 2.5 2.7 1.3 1.5 93 34 STANMORE CONTRACTORS Mar-24 189.8 138.9 36.6 19.7 8.2 10.4 5.9 94 68 TIDE CONSTRUCTION Aug-24 187.1 197.2 -5.1 4.9 7.1 2.6 3.6 95 74 SHERRYGREEN Mar-24 175.8 206.8 -15 3.1 10.6 1.8 5.1 96 56 BYRNE GROUP Jun-24 170.6 191.3 -10.8 7.4 6.8 4.3 3.5 97 50 BARHALE Jun-24 169.4 124.9 35.6 9 4.5 5.3 3.6 98 64 ONE GROUP CONSTRUCTION Dec-23 166.8 164.5 1.4 5.5 7.1 3.3 4.3 99 72 J COFFEY CONSTRUCTION Sep-23 164.5 109.3 50.6 4.3 2.8 2.6 2.6 100 26 THOMAS ARMSTRONG (HOLDINGS) Sep-23 162.7 159.5 2 23.9 20.4 14.7 12.8

Data compiled by Company Watch.