- MR JACK LTDActive - Proposal to Strike off- 09519497 - Incorporated on 31 March 2015 
- MR. JACK KELLY- NI605369 
- MR JACK LEE LTD- NI608003 - Incorporated on 27 June 2011 
- MR JACK'S HOME LTDDisolved- 13313653 - Dissolved on 21 June 2022 
- WITH MR. JACK LTD- 15440105 - Incorporated on 24 January 2024 
- MR JACK WEBBER LTD- 15496919 - Incorporated on 17 February 2024 
- MR JACKS LIMITEDActive - Proposal to Strike off- 12094354 - Incorporated on 10 July 2019 
- S G GEMMELL LTDLiquidation- 06034208 - Incorporated on 20 December 2006 
- GEMMELL LTDActive - Proposal to Strike off- 09202394 - Incorporated on 3 September 2014 
- L GEMMELL LTDDisolved- SC610887 - Dissolved on 14 November 2023 
- MR JACK BARBERS LTDDisolved- 11806895 - Dissolved on 17 January 2023 
- GEMMELL LTDDisolved- SC638705 - Dissolved on 13 June 2023 
- GEMMELL LIMITEDDissolved- SC568396 - Dissolved on 12 November 2019 
- MR M. JACKSON LIMITEDActive - Proposal to Strike off- 11739382 - Incorporated on 21 December 2018 
- MR JACK BEAR LIMITED- 13975194 - Incorporated on 14 March 2022 
- MR. BLACK JACKETS LTDDisolved- 14882745 - Dissolved on 22 October 2024 
- SJ GEMMELL LTD- 08539096 - Incorporated on 22 May 2013 
- MR JACK SPENCER LIMITEDDisolved- 14210911 - Dissolved on 5 December 2023 
- MR JACKSONS LIMITED- 07515776 - Incorporated on 3 February 2011 
- MR JACK ROWLEY LIMITED- 10365766 - Incorporated on 8 September 2016