| Company | Timeline | Status | |
| Brooks Building Services Ltd Secretary • Secretary | 9 Mar 2001←24 Years→Current | Active | |
| Brooks Facilities Support Ltd Secretary • Secretary | 26 Oct 1999←23 Years→13 Mar 2023 | Dissolved | |
| Brooks Electrical Engineering Services Ltd Secretary • Secretary | 8 Jun 1998←27 Years→Current | Active | |
