- CALLUM BUILDERS LIMITEDActive - Proposal to Strike off- 07404758 - Incorporated on 12 October 2010 
- CALLUM DONNAN LIMITEDActive - Proposal to Strike off- 08580836 - Incorporated on 24 June 2013 
- CALLUM FRASER LIMITEDLiquidation- SC467035 - Incorporated on 9 January 2014 
- CALLUM FRANKLIN LIMITEDActive - Proposal to Strike off- 09147919 - Incorporated on 25 July 2014 
- CALLUM ARMSTRONG LIMITEDActive - Proposal to Strike off- 10305461 - Incorporated on 1 August 2016 
- CALLUM DAWSON LIMITEDDisolved- 14219750 - Dissolved on 12 December 2023 
- CALLUM ROBERTSON LTD- SC726359 - Incorporated on 15 March 2022 
- THOMAS CALLUM LIMITED- 14634662 - Incorporated on 2 February 2023 
- CALLUM & TREASURES CIC- 15131760 - Incorporated on 11 September 2023 
- CALLUM BOSCOE LIMITEDDisolved- 15138211 - Dissolved on 18 February 2025 
- CALLUM MCINTYRE LIMITED- 14393070 - Incorporated on 3 October 2022 
- CALLUM HARKUS LIMITEDDisolved- 13606832 - Dissolved on 7 March 2023 
- CALLUM MANAGEMENT LTD- 15908345 - Incorporated on 20 August 2024 
- COACH CALLUM LIMITED- 16149313 - Incorporated on 23 December 2024 
- THOMPSON & THOMPSON SAFETY LIMITEDActive - Proposal to Strike off- 06630970 - Incorporated on 26 June 2008 
- THOMPSON & THOMPSON CONSULTANCY LTD- 11381591 - Incorporated on 24 May 2018 
- THOMPSON & THOMPSON HOLDINGS LTD- 12469204 - Incorporated on 18 February 2020 
- MR & MRS GIN LTDDisolved- 10554971 - Dissolved on 1 April 2025 
- MR & MRS TOY LTDActive - Proposal to Strike off- 09801554 - Incorporated on 30 September 2015 
- GRACE HAIR & BEAUTY LTDLiquidation- 10892308 - Incorporated on 31 July 2017