- DEVELOPMENT CONTROL SERVICES LIMITED- 03308437 - Incorporated on 22 January 1997 
- ASTRAL CONTROL SERVICES LIMITED- 04610971 - Incorporated on 6 December 2002 
- SUBSEA CONTROL SERVICES LIMITEDDisolved- 01854186 - Dissolved on 29 May 2024 
- WILDLIFE CONTROL SERVICES LIMITED- 03117911 - Incorporated on 25 October 1995 
- INDEPENDENT CONTROL SERVICES LIMITED- 09014394 - Incorporated on 28 April 2014 
- BOILER CONTROL SERVICES LIMITED- 09080256 - Incorporated on 10 June 2014 
- PRIORY CONTROL SERVICES LIMITED- 11538323 - Incorporated on 28 August 2018 
- EWHURST CONTROL SERVICES LIMITEDDissolved- 03389781 - Dissolved on 13 April 2010 
- ENERGY CONTROL SERVICES LIMITED- 09661129 - Incorporated on 29 June 2015 
- INSTRUMENTATION CONTROL SERVICES LIMITED- 10663473 - Incorporated on 10 March 2017 
- BIRD CONTROL SERVICES LIMITEDDisolved- 10665781 - Dissolved on 20 July 2021 
- CLEARANCE CONTROL SERVICES LIMITEDDisolved- 13678235 - Dissolved on 27 May 2025 
- MISSION CONTROL SERVICES LIMITED- 14678594 - Incorporated on 21 February 2023 
- FC CONTROL SERVICES LIMITED- SC816999 - Incorporated on 21 July 2024 
- DIMENSIONAL CONTROL SERVICES LIMITED- 16226323 - Incorporated on 3 February 2025 
- PIPESPY 2000 LIMITEDDisolved- 03048603 - Dissolved on 27 February 2024 
- VEHICLE CONTROL SERVICES LIMITED- 02498820 - Incorporated on 3 May 1990 
- ACCESS CONTROL SERVICES LIMITED- 02793313 - Incorporated on 24 February 1993 
- DUST CONTROL SERVICES LIMITEDActive - Proposal to Strike off- 01629015 - Incorporated on 15 April 1982 
- THISTLE CONTROL SERVICES LIMITEDDissolved- SC082006 - Dissolved on 17 March 2020