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Every UK company that files accounts electronically, filterable by what it actually earns. Revenue and profit appear only where the company published a P&L — never estimated.
36,014 companies
| # | Company | Revenue | Profit | Margin | Staff |
|---|---|---|---|---|---|
| 1 | The Castle Building Services Organisation Limited Hebburn · Construction of commercial buildings Capital-lightOperating leverage+1 | £66.3m | £7.9m | 11.9% | 120 |
| 2 | Borthwick Heating Insulation UK Ltd Hartlepool · Plumbing, heat and air-conditioning installation IndependentCapital-light+3 | £64.2m | £7.3m | 11.4% | 158 |
| 3 | Starfish 9 Ltd Motherwell · Construction of commercial buildings Capital-lightOperating leverage+2 | £26.4m | £6.1m | 23.3% | 55 |
| 4 | Berks Insulation Limited Slough · Plumbing, heat and air-conditioning installation Capital-lightBoring industry+1 | £37.1m | £6m | 16.2% | 24 |
| 5 | E Plan Energy Limited Halesowen · Plumbing, heat and air-conditioning installation Capital-lightOperating leverage+2 | £42.5m | £5.1m | 11.9% | 136 |
| 6 | Smith and Byford Limited Sutton · Electrical installation IndependentCapital-light+3 | £58.5m | £4.8m | 8.2% | 438 |
| 7 | East West Connect Limited Chelmsford · Electrical installation Capital-lightOperating leverage+1 | £52.4m | £4.1m | 7.9% | 129 |
| 8 | NRT Building Services Group Limited Banstead · Electrical installation Capital-lightOperating leverage+1 | £21.8m | £4m | 18.2% | 97 |
| 9 | Bancroft Limited London · Electrical installation Boring industry | £100m | £3.8m | 3.8% | 133 |
| 10 | Premier Mechanical Installations Limited Maidenhead · Plumbing, heat and air-conditioning installation Capital-lightOperating leverage+2 | £27.6m | £3.7m | 13.4% | 21 |
| 11 | GB Electrical and Building Services Ltd Hereford · Electrical installation Capital-lightBoring industry+1 | £19.1m | £3.6m | 18.7% | 108 |
| 12 | East West Group Limited Chelmsford · Electrical installation Profit only Small teamBoring industry+1 | — | £3.5m | — | 3 |
| 13 | Therma-Mech Ltd Bristol · Plumbing, heat and air-conditioning installation Capital-lightBoring industry | £24.3m | £3.4m | 14.1% | 35 |
| 14 | Kane Group Building Services Ltd Banbridge · Plumbing, heat and air-conditioning installation Capital-lightOperating leverage+2 | £87.6m | £3.4m | 3.9% | 244 |
| 15 | Dodd Group (Midlands) Limited Shropshire · Electrical installation Capital-lightBoring industry | £161m | £3.3m | 2.1% | 707 |
| 16 | Gloster Mep Limited Tunbridge Wells · Electrical installation Boring industry | £45.2m | £3m | 6.7% | 83 |
| 17 | Watt Energy Saver Ltd Newark · Electrical installation Capital-lightBoring industry | £16.5m | £3m | 18.2% | 27 |
| 18 | Artic Building Services Limited London · Electrical installation Capital-lightBoring industry+1 | £39.9m | £2.8m | 7.1% | 207 |
| 19 | Primech Building Services Limited Gillingham · Electrical installation Capital-lightOperating leverage+2 | £27.2m | £2.8m | 10.3% | 83 |
| 20 | Innovation Air Conditioning and Building Services Limited Croydon · Plumbing, heat and air-conditioning installation IndependentCapital-light+3 | £24.7m | £2.8m | 11.2% | 27 |
| 21 | Wheeler's (Westbury) Limited Westbury · Electrical installation Capital-lightOperating leverage+1 | £34.7m | £2.7m | 7.9% | 125 |
| 22 | Defluo Plumbing and Drainage Limited Sidcup · Plumbing, heat and air-conditioning installation Capital-lightOperating leverage+3 | £14.9m | £2.7m | 18.3% | 93 |
| 23 | A. & B. Engineering (Mechanical Service Division) Limited Liverpool · Plumbing, heat and air-conditioning installation Capital-lightBoring industry+1 | £59.9m | £2.7m | 4.5% | 79 |
| 24 | Redworx Mep Limited London · Electrical installation Capital-lightYoung and profitable+3 | £41m | £2.7m | 6.5% | 40 |
| 25 | Saltire Facilities Management Limited Bellshill · Plumbing, heat and air-conditioning installation Capital-lightOperating leverage+1 | £31.4m | £2.5m | 8.1% | 294 |
Free plan shows the first 25 of 36,014 results. Pro (coming soon) unlocks every result and advanced filters.
Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.