- MICHAEL J. HART LIMITEDDisolved- 04909012 - Dissolved on 5 December 2023 
- MICHAEL HART & SON LIMITED- 04888108 - Incorporated on 4 September 2003 
- MICHAEL HARTE LIMITEDDisolved- SC712437 - Dissolved on 19 March 2024 
- MICHAEL HART HOMES LIMITED- 04562690 - Incorporated on 15 October 2002 
- ANDREW MICHAEL HARTLEY LTDActive - Proposal to Strike off- 11206769 - Incorporated on 14 February 2018 
- MICHAEL J HART CARPENTRY LIMITED- 08535260 - Incorporated on 20 May 2013 
- MICHAEL HART AND COMPANY LIMITED- 04867528 - Incorporated on 14 August 2003 
- MICHAEL HARTNELL NURSERIES LTD- 15441715 - Incorporated on 25 January 2024 
- MICHAEL HARTLAND ASSOCIATES LTD- 11383961 - Incorporated on 25 May 2018 
- HART & HART LTDActive - Proposal to Strike off- 08627914 - Incorporated on 29 July 2013 
- HART @ HART LIMITEDActive - Proposal to Strike off- SC533686 - Incorporated on 26 April 2016 
- CAREVA SOLUTIONS LTD- 14777651 - Incorporated on 3 April 2023 
- HART 2 HART LTD- 07451910 - Incorporated on 25 November 2010 
- HART AND HART LTD- 13622564 - Incorporated on 15 September 2021 
- MICHAEL HART LIGHTING AND ELECTRICAL SOLUTIONS LIMITED- 07592769 - Incorporated on 5 April 2011 
- WHITE HART (HART) LTDDisolved- 15089108 - Dissolved on 1 July 2025 
- HART TO HART LIMITEDActive - Proposal to Strike off- 09243474 - Incorporated on 1 October 2014 
- HART & HART CONSTRUCTION LTDDissolved- 10766880 - Dissolved on 8 January 2019 
- HART2HART CARE LTDActive - Proposal to Strike off- 08920579 - Incorporated on 4 March 2014 
- ALL ABOUT ME HEALTH SHOP LTDDisolved- 10714426 - Dissolved on 20 August 2024