| express holdco limited | £197.4m | £336.1m | Feb 2023 | - | Open | Director |
| ej parker technical services holdings limited | £85.2m | £87.6m | Nov 2024 | - | Open | Director |
| express bidco limited | £224.6k | £71.5m | Feb 2023 | - | Open | Director |
| ej parker technical services (central) ltd | £72.1m | £51m | Nov 2024 | - | Open | Director |
| ej parker technical services holdings (scotland) limited | £53.2m | £40.6m | Nov 2024 | - | Open | Director |
| ej musk process services (peterborough) ltd | £22.6m | £27.1m | Nov 2024 | - | Open | Director |
| ej parker technical services group limited | £3.1m | £23.2m | Nov 2024 | - | Open | Director |
| ej musk process services group limited | £27.3m | £21m | Nov 2024 | - | Open | Director |
| pettits limited | £14.9m | £19.6m | Nov 2024 | - | Open | Director |
| motivair compressors limited | £14.9m | £19.6m | Nov 2024 | - | Open | Director |
| ej musk process services ltd | £13.1m | £10.8m | Nov 2024 | - | Open | Director |
| ej peak technology solutions limited | £12.6m | £9.9m | Nov 2024 | - | Open | Director |
| ej musk process services (swadlincote) ltd | £12.4m | £7.4m | Nov 2024 | - | Open | Director |
| ej parker technical services (scotland north) ltd | £16.6m | £6.7m | Nov 2024 | - | Open | Director |
| automated control solutions limited | £6.6m | £5m | Nov 2024 | - | Open | Director |
| automated control solutions holdings limited | £519.1k | £4.5m | Nov 2024 | - | Open | Director |
| ej parker technical services (scotland south) ltd | £36.9m | £3.2m | Nov 2024 | - | Open | Director |
| ej parker technical services (louth) ltd | £975.5k | £2.2m | Nov 2024 | - | Open | Director |
| acs electrical engineering limited | £747.6k | £1.5m | Nov 2024 | - | Open | Director |
| korrie mechanical & plumbing ltd | - | £2.4 | Nov 2024 | - | Open | Director |
| ej acquisition company limited | - | £1.5 | Nov 2019 | - | Open | Director |
| march midco limited | - | - | Nov 2024 | - | Open | Director |
| march bidco limited | - | - | Nov 2024 | - | Open | Director |
| w. t. parker (electrical) limited | - | - | Nov 2024 | - | Open | Director |
| march holdco limited | - | - | Nov 2024 | - | Open | Director |
