- JACKDUP LTD- 15662565 - Incorporated on 20 April 2024 
- JACKSON1 LTDDisolved- 15306310 - Dissolved on 29 April 2025 
- JACK & MILO LTD- 16008539 - Incorporated on 9 October 2024 
- JACKSUN LTD- 16015943 - Incorporated on 14 October 2024 
- JACK OV ALL LTD- 16189339 - Incorporated on 16 January 2025 
- JACK-POT HR LTD- 16323333 - Incorporated on 18 March 2025 
- JACKSON A LTD- 16411848 - Incorporated on 28 April 2025 
- JACK & ROSS LTD- 16533930 - Incorporated on 22 June 2025 
- JACKEVA LTDDissolved- 07182154 - Dissolved on 19 August 2014 
- JACK'S GIFT LTDDissolved- 07358719 - Dissolved on 3 June 2014 
- T L JACKSON LTD- SC422158 - Incorporated on 18 April 2012 
- JACK KAY & SONS- SL000497 - Incorporated on 4 November 1982 
- JACKO'S GYM LTDActive - Proposal to Strike off- 05277126 - Incorporated on 3 November 2004 
- JACK PAUL LTDDissolved- 06341007 - Dissolved on 29 March 2011 
- P F JACKSON LTD.- 07721611 - Incorporated on 28 July 2011 
- MR JACK LEE LTD- NI608003 - Incorporated on 27 June 2011 
- JACKLOR LTDDisolved- 07826786 - Dissolved on 21 December 2021 
- K R JACKSON LTD- 07551734 - Incorporated on 4 March 2011 
- JACKPOT LTDActive - Proposal to Strike off- 07567779 - Incorporated on 17 March 2011 
- T & J JACKSON LTD- 07689655 - Incorporated on 1 July 2011