- LONDON SECURITY GROUP- LP012437 - Incorporated on 14 September 2007 
- GROUP3 SECURITY LIMITEDDissolved- 06811590 - Dissolved on 21 September 2010 
- GROUP K9 SECURITY LIMITEDDisolved- 12707658 - Dissolved on 30 November 2021 
- D & D SECURITY GROUP LIMITEDActive - Proposal to Strike off- SC582250 - Incorporated on 22 November 2017 
- 2020 SECURITY GROUP LIMITEDDisolved- 13379257 - Dissolved on 25 April 2023 
- M4 SECURITY GROUP LIMITEDDisolved- 11389237 - Dissolved on 6 September 2022 
- GROUP 1 SECURITY LIMITEDActive - Proposal to Strike off- 13735013 - Incorporated on 10 November 2021 
- A1 SECURITY GROUP LIMITEDDisolved- 13278141 - Dissolved on 30 August 2022 
- GROUP 4 SECURITY LIMITED- 07977105 - Incorporated on 6 March 2012 
- R G SECURITY GROUP LIMITED- SC505666 - Incorporated on 12 May 2015 
- A1 SECURITY GROUP LIMITEDDisolved- 14540117 - Dissolved on 21 May 2024 
- BANFIELD RESIDENTIAL SALES AND LETTINGS LIMITED- 10144029 - Incorporated on 24 April 2016 
- E-SECURITY GROUP LIMITEDActive - Proposal to Strike off- 11305526 - Incorporated on 11 April 2018 
- M4 SECURITY GROUP LIMITED- 09962502 - Incorporated on 21 January 2016 
- 8 SECURITY GROUP LIMITEDActive - Proposal to Strike off- 11580076 - Incorporated on 20 September 2018 
- A.C.E. K9 GROUP SECURITY LIMITEDDisolved- 13555738 - Dissolved on 26 September 2023 
- SAS GROUP SECURITY LIMITEDDissolved- 06966121 - Dissolved on 28 February 2012 
- DYNAMIC SECURITY LONDON LTD- 10958458 - Incorporated on 12 September 2017 
- SEP2 LIMITED- 09988870 - Incorporated on 4 February 2016 
- SEACURE GROUP LTD- 15591721 - Incorporated on 25 March 2024