| Officer | R.O'ROURKE & SON LIMITED. | 🇬🇧United Kingdom | Active | 07/01/2026 – 13/02/2026 |
| Officer | SELECT PLANT HIRE COMPANY LIMITED | 🇬🇧United Kingdom | Active | 20/02/2026 – 13/02/2026 |
| Officer | EXPLORE 2050 ENGINEERING LIMITED | 🇬🇧United Kingdom | Active | 20/02/2026 – 13/02/2026 |
| Officer | LAING O'ROURKE SCOTLAND LIMITED | 🇬🇧United Kingdom | Active | 18/02/2026 – 13/02/2026 |
| Officer | LAING O'ROURKE HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 20/02/2026 – 13/02/2026 |
| Officer | LAING O'ROURKE MANUFACTURING LIMITED | — | Dissolved | 02/06/2026 – present |
| Officer | LAING ENGINEERING LIMITED | 🇬🇧United Kingdom | Active | 08/01/2026 – 13/02/2026 |
| Officer | CROWN HOUSE TECHNOLOGIES LIMITED | 🇬🇧United Kingdom | Active | 20/02/2026 – 13/02/2026 |
| Officer | O'ROURKE CIVIL & STRUCTURAL ENGINEERING LIMITED | 🇬🇧United Kingdom | Active | 08/01/2026 – 13/02/2026 |
| Officer | JOHN LAING INTERNATIONAL LIMITED | 🇬🇧United Kingdom | Active | 18/02/2026 – 13/02/2026 |
| Officer | EXPANDED PILING LIMITED | 🇬🇧United Kingdom | Active | 18/02/2026 – 13/02/2026 |
| Officer | LAING LIMITED | 🇬🇧United Kingdom | Active | 18/02/2026 – 13/02/2026 |
| Officer | PORTFOLIO SOLUTIONS (NORTHERN IRELAND) LIMITED | 🇬🇧United Kingdom | Active | 03/02/2026 – 13/12/2018 |
| Officer | EXPLORE 2050 MANUFACTURING LIMITED | 🇬🇧United Kingdom | Active | 20/02/2026 – 13/02/2026 |
| Officer | LAING O'ROURKE MIDLANDS LIMITED | 🇬🇧United Kingdom | Active | 18/02/2026 – 13/02/2026 |
| Officer | LAING O'ROURKE UTILITIES LIMITED | 🇬🇧United Kingdom | Active | 08/01/2026 – 13/02/2026 |
| Officer | LAING O'ROURKE SERVICES LIMITED | 🇬🇧United Kingdom | Active | 20/02/2026 – 13/02/2026 |
| Officer | LAING O'ROURKE PLC. | 🇬🇧United Kingdom | Active | 20/02/2026 – 13/02/2026 |
| Officer | LAING CONSTRUCTION LIMITED | 🇬🇧United Kingdom | Active | 08/01/2026 – 13/02/2026 |
| Officer | O'ROURKE INVESTMENTS HOLDINGS (UK) LIMITED | 🇬🇧United Kingdom | Active | 23/01/2026 – 13/02/2026 |
| Officer | LAING O'ROURKE DELIVERY LIMITED | 🇬🇧United Kingdom | Active | 18/02/2026 – 13/02/2026 |
| Officer | O'ROURKE CIVIL ENGINEERING LIMITED | 🇬🇧United Kingdom | Active | 07/01/2026 – 13/02/2026 |
| Officer | LAING O'ROURKE MANUFACTURING HOLDINGS LIMITED | — | Dissolved | 02/06/2026 – present |
| Officer | LAING O'ROURKE WALES & WEST LIMITED | 🇬🇧United Kingdom | Active | 26/01/2026 – 13/02/2026 |
| Officer | O'ROURKE INVESTMENTS LIMITED | 🇬🇧United Kingdom | Active | 20/02/2026 – 13/02/2026 |
| Officer | LAING O'ROURKE INFRASTRUCTURE LIMITED | 🇬🇧United Kingdom | Active | 19/02/2026 – 13/02/2026 |
| Officer | O.C. SUMMERS LIMITED | 🇬🇧United Kingdom | Active | 08/01/2026 – 13/02/2026 |
| Officer | VETTER UK LIMITED | 🇬🇧United Kingdom | Active | 19/02/2026 – 13/02/2026 |
| Officer | JOHN LAING CONSTRUCTION LIMITED | 🇬🇧United Kingdom | Active | 18/02/2026 – 13/02/2026 |
| Officer | ANCHOR BOULEVARD LIMITED | 🇬🇧United Kingdom | Active | 13/01/2026 – 13/02/2026 |
| Officer | CELLENCE PLUS LIMITED | — | Dissolved | 02/06/2026 – present |
