- MR CHRISTOPHER LIMITEDActive - Proposal to Strike off- 09747664 - Incorporated on 25 August 2015 
- EXDPCO LTDDisolved- 03461782 - Dissolved on 18 October 2023 
- MR JOHN INVEST LIMITEDDisolved- 07277737 - Dissolved on 16 November 2021 
- MR JOHN PILLOW LIMITEDDissolved- 09148892 - Dissolved on 2 January 2018 
- BY DUFFY LTDActive - Proposal to Strike off- 10104313 - Incorporated on 5 April 2016 
- OK DUFFY LTDDisolved- NI680800 - Dissolved on 25 April 2023 
- MRS CHRISTMAS LIMITED- 04348219 - Incorporated on 7 January 2002 
- MR JOHN INTERNATIONAL LTD- 15732972 - Incorporated on 21 May 2024 
- MR DARRYL JOHN EVANS LTDDisolved- 15406074 - Dissolved on 17 June 2025 
- MR JOHNSTONE'S T.B LIMITEDActive - Proposal to Strike off- 08055187 - Incorporated on 2 May 2012 
- THE LAW CHIEF JUSTICE MR NEVILLE A. JOHNSON (UK) LIMITEDActive - Proposal to Strike off- 04585990 - Incorporated on 8 November 2002 
- DUFFY & CO. (A&T) LTD- NI029803 - Incorporated on 27 July 1995 
- SA DUFFY 7596 LTDActive - Proposal to Strike off- 10533003 - Incorporated on 20 December 2016 
- LJ DUFFY LTD- 13654649 - Incorporated on 30 September 2021 
- OA DUFFY LTDDisolved- NI680600 - Dissolved on 18 April 2023 
- IA DUFFY LTDDisolved- 13532807 - Dissolved on 18 July 2023 
- IC DUFFY LTDDisolved- 13790079 - Dissolved on 13 May 2025 
- MR JOHN KIMBELL LIMITEDDisolved- 12104025 - Dissolved on 24 December 2024 
- JOHN HERBERT GALLIMORE LTD- 13783336 - Incorporated on 6 December 2021 
- MR JOHN CONSULTING LIMITEDDisolved- 10226270 - Dissolved on 26 April 2022