- CALLUM MACDONALD LIMITEDActive - Proposal to Strike off- SC606875 - Incorporated on 31 August 2018 
- CALLUM MCDONNELL LTD- 13334692 - Incorporated on 14 April 2021 
- CALLUM GEORGE LIMITEDDisolved- 13935828 - Dissolved on 9 April 2024 
- CALLUM FRAMES LIMITED- 14009521 - Incorporated on 29 March 2022 
- CALLUM EARNSHAW LTDActive - Proposal to Strike off- 15676421 - Incorporated on 24 April 2024 
- CALLUM HOLDINGS LIMITEDActive - Proposal to Strike off- 15690623 - Incorporated on 29 April 2024 
- COE-CALLUM LIMITEDActive - Proposal to Strike off- 11015839 - Incorporated on 17 October 2017 
- CALLUM MANNING LTDDisolved- 12968555 - Dissolved on 28 June 2022 
- CALLUM TUNMORE LTD- 13992182 - Incorporated on 21 March 2022 
- CALLUM KENNEDY LTDDisolved- 14084533 - Dissolved on 18 June 2024 
- CALLUM’S BOLTING LTDDisolved- 14967556 - Dissolved on 17 June 2025 
- CALLUM BAGSHAW LTD- 16296533 - Incorporated on 6 March 2025 
- IAN CALLUM DESIGN LTDDisolved- 07577636 - Dissolved on 30 May 2023 
- CALLUM J WATT LIMITEDDisolved- SC470045 - Dissolved on 8 August 2023 
- MARCUS CALLUM PTY LTDActive - Proposal to Strike off- 11913450 - Incorporated on 29 March 2019 
- CALLUM WILLIAMS 6017 LTDActive - Proposal to Strike off- 10282989 - Incorporated on 16 July 2016 
- MAYHEW CALLUM LIMITEDDisolved- 04477011 - Dissolved on 19 July 2022 
- CALLUM CONSTRUCTION LIMITED- 06940518 - Incorporated on 22 June 2009 
- CALLUM CLARK LIMITEDLiquidation- 06862243 - Incorporated on 28 March 2009 
- CALLUM TURNER LIMITED- 09287626 - Incorporated on 30 October 2014