| john laing limited | £300k | £5.3b | Mar 2023 | - | Open | Director |
| john laing holdco limited | - | £5.3b | Apr 2023 | - | Open | Director |
| aqueduct newco 2 limited | £66.8m | £2.1b | Jul 2022 | - | Open | Director |
| aqueduct newco 1 limited | - | £1.9b | Jul 2022 | - | Open | Director |
| john laing investments limited | £35m | £1.7b | Jul 2022 | - | Open | Director |
| john laing investments holding limited | £19.9m | £924.1m | Mar 2023 | - | Open | Director |
| john laing investments overseas holdings limited | £24.6m | £920.1m | Mar 2023 | - | Open | Director |
| john laing services limited | - | £243.2m | Mar 2023 | - | Open | Director |
| john laing infrastructure limited | £2.9m | £147m | Mar 2023 | - | Open | Director |
| laing investments management services limited | £38m | £35.4m | Mar 2023 | - | Open | Director |
| john laing investments holding andes limited | - | £35.4m | May 2023 | - | Open | Director |
| west valley jl holdco limited | £1.3m | £22.3m | May 2023 | - | Open | Director |
| john laing investments (rv555) limited | - | £21.7m | Mar 2023 | - | Open | Director |
| golden valley jl holdco limited | - | £13.6m | May 2023 | - | Open | Director |
| river valley jl holdco limited | - | £12.5m | May 2023 | - | Open | Director |
| john laing (usa) limited | £9.4m | £11.8m | Jun 2023 | - | Open | Director |
| john laing projects & developments (holdings) limited | - | £7.1m | Mar 2023 | - | Open | Director |
| laing property holdings limited | £300 | £4.3m | Mar 2023 | - | Open | Director |
| laing property limited | - | £3m | Mar 2023 | - | Open | Director |
| rl design solutions limited | - | £2.3m | Mar 2023 | - | Open | Director |
| laing investments management services (canada) limited | £1.4m | £806.8k | Jun 2023 | - | Open | Director |
| laing investments management services (spain) limited | £131k | £62.7k | May 2023 | - | Open | Director |
| laing investments management services (peru) limited | - | £2.6k | Mar 2023 | - | Open | Director |
| john laing homes limited | - | £2.6 | Mar 2023 | - | Open | Director |
| john laing projects & developments limited | - | £2.6 | Mar 2023 | - | Open | Director |
