| Name |
Registered No. |
| First Security (Guards) Ltd |
2053619 |
| Interserve (Defence) Ltd |
2574880 |
| Interserve Engineering Services Limited |
03044398 |
| Interserve Environmental Services Ltd |
3306668 |
| Interserve (Facilities Management) Ltd |
3253304 |
| Interserve (Facilities Services - Slough) Ltd |
954121 |
| Interservefm Ltd |
2820560 |
| Interserve Industrial Services Limited |
444313 |
| Interserve Security Ltd |
1933720 |
| Interserve Specialist Services (Holdings) Limited |
03044401 |
| Interserve Technical Services Ltd |
2798048 |
| MacLellan International Ltd |
3688689 |
| MacLellan International Airport Services Ltd |
1403501 |
| MacLellan Management Services Ltd |
3385466 |
| R & D Security Manufacturing Ltd |
02251935 |
| SSD UK Ltd |
3378281 |
| TASS (Europe) Ltd |
3896302 |
