- CALLUM O'SULLIVAN LTDDisolved- 11862433 - Dissolved on 8 August 2023 
- CALLUM QUICK LIMITEDActive - Proposal to Strike off- 10103675 - Incorporated on 5 April 2016 
- CALLUM MOPPET LIMITEDActive - Proposal to Strike off- 11169421 - Incorporated on 25 January 2018 
- CALLUM COMPOSITES LIMITEDActive - Proposal to Strike off- 10595678 - Incorporated on 1 February 2017 
- CALLUM CONSTRUCTION LTDDisolved- 14597439 - Dissolved on 4 March 2025 
- FAST CALLUM LIMITEDDisolved- SC770821 - Dissolved on 29 October 2024 
- CALLUM ELECTRICAL LIMITEDDisolved- 15107563 - Dissolved on 4 February 2025 
- CALLUM AUTOMOTIVE LTD- 15698798 - Incorporated on 1 May 2024 
- CALLUM SIMPSON LTDDisolved- 13629057 - Dissolved on 14 March 2023 
- PHOTOS BY CALLUM LTDActive - Proposal to Strike off- SC444160 - Incorporated on 5 March 2013 
- CALLUM BROSNAN LTDActive - Proposal to Strike off- 10958906 - Incorporated on 12 September 2017 
- STEPHEN L. CALLUM LTDActive - Proposal to Strike off- 10221911 - Incorporated on 8 June 2016 
- CALLUM WILSON TM LTDDisolved- 13894860 - Dissolved on 11 July 2023 
- CALLUM DANIELS 3238 LTDActive - Proposal to Strike off- 10106496 - Incorporated on 6 April 2016 
- CALLUM TINDALL LTDDisolved- 12602080 - Dissolved on 19 October 2021 
- CALLUM BARNETT LTDDissolved- 11356868 - Dissolved on 15 October 2019 
- CALLUM ROBERTS 01 LTDDisolved- 13405821 - Dissolved on 25 October 2022 
- CALLUM BRADLEY LTDDisolved- 14106867 - Dissolved on 15 October 2024 
- CALLUM FERN GOLF LTD- 16156712 - Incorporated on 31 December 2024 
- CALLUM BEATTIE LTD- 16236880 - Incorporated on 7 February 2025