| A.M.P. Electrical Contractors & Engineers (S.E.) Limited | 2004 | 30 Sep 2027 (in 352 days) |
| A.M.P. Electrical Contractors and Engineers Limited | 2002 | 31 Dec 2026 (in 79 days) |
| Altera Ltd | 2025 | 31 Dec 2027 (in 444 days) |
| Amie Electro Limited | 2019 | 30 Jun 2027 (in 260 days) |
| Aston Dove Limited | 1988 | 31 Dec 2026 (in 79 days) |
| Battlebridge Maintenance Services (Group) Ltd | 2025 | 30 Nov 2027 (in 413 days) |
| Battlebridge Maintenance Services (Installations) Ltd | 2025 | 30 Nov 2027 (in 413 days) |
| Battlebridge Maintenance Services (London) Ltd | 2025 | 5 Nov 2026 (in 23 days) |
| Battlebridge Maintenance Services (Southern) Ltd | 2024 | 31 Jan 2027 (in 110 days) |
| Bourne Electrical Contracting Limited | 2025 | 12 Aug 2027 (in 303 days) |
| Bright Spark 24/7 Ltd | 2025 | 16 Sep 2027 (in 338 days) |
| Browns Electrical & Solar Services Ltd | 2002 | 30 Apr 2027 (in 199 days) |
| C Warnham Electrical Services Ltd | 2017 | 31 May 2027 (in 230 days) |
| Camcard Construction Ltd | 2021 | 30 Sep 2027 (in 352 days) |
| Cardo Contractors Ltd (Global) Ltd | 2023 | 30 Nov 2027 (in 413 days) |
| Clemlec Heritage Limited | 2024 | 31 Dec 2027 (in 444 days) |
| Clemlec Limited | 2005 | 31 Dec 2027 (in 444 days) |
| Colin Thwaites Limited | 2006 | 31 Dec 2026 (in 79 days) |
| CSS Caring Hands Ltd | 2016 | 31 Dec 2026 (in 79 days) |
| D & M Electrical Contractors Ltd. | 2003 | 31 Jul 2027 (in 291 days) |
| Dan Bartlett Electrical Limited | 2016 | 31 Dec 2026 (in 79 days) |
| Devonport Electrical Services Limited | 2025 | 31 Dec 2027 (in 444 days) |
| DMD Electrical Limited | 2023 | 31 Mar 2027 (in 169 days) |
| Dstrad Limited | 2016 | 30 Sep 2027 (in 352 days) |
| East Surrey Electrical Services Ltd | 2025 | 31 Oct 2027 (in 383 days) |
| Edward Joseph & Sons (Southern) Ltd | 2022 | 31 Aug 2027 (in 322 days) |
| Eleccess Services Limited | 2019 | 30 Dec 2026 (in 78 days) |
| Electratec Services Limited | 2003 | 30 Sep 2027 (in 352 days) |
| Emergency Electrician 24 Hour Grip Electric Ltd | 2018 | 30 Apr 2027 (in 199 days) |
| Eurospark Electricals Limited | 2025 | 6 Jul 2027 (in 266 days) |
| Flare Bespoke Limited | 2023 | 31 Dec 2026 (in 79 days) |
| Flick Electrical Ltd | 2023 | 30 Jun 2027 (in 260 days) |
| Grip Electric Limited | 2025 | 29 Jul 2027 (in 289 days) |
| Heritage Electrical London Limited | 2017 | 31 Dec 2026 (in 79 days) |
| Hiley Electrical Services Ltd | 2023 | 30 Sep 2027 (in 352 days) |
| Huntley Electrical Limited | 2014 | 31 Dec 2027 (in 444 days) |
| I.C.M. Alarms Ltd | 2007 | 30 Sep 2027 (in 352 days) |
| Interface Controls Limited | 2022 | 28 Feb 2027 (in 138 days) |
| Itech Electrical Group Ltd | 2021 | 31 Oct 2026 (in 18 days) |
| J T Mechanical Services Limited | 2003 | 30 Sep 2027 (in 352 days) |
| James Paul Electrical Ltd | 2020 | |
| JJB BMS Limited | 2013 | 31 Dec 2027 (in 444 days) |
| Joseph Edward Electrical Ltd | 2026 | 29 Oct 2027 (in 381 days) |
| Journeyman Electrics Limited | 2017 | 31 Mar 2027 (in 169 days) |
| K.A.L Electrical Limited | 2014 | 5 Jan 2027 (in 84 days) |
| L Arnold Electrical Limited | 2016 | 31 Dec 2026 (in 79 days) |
| L&O Electrical Contractors Ltd | 2025 | 13 Oct 2026 (today) |
| Longhurst Electrical Services Limited | 2007 | 31 Oct 2026 (in 18 days) |
| Maa Electrical Limited | 2014 | 31 Dec 2026 (in 79 days) |
| Mercury Mechanical Limited | 2026 | 21 Jun 2028 (in 617 days) |