- K O'CONNOR LTD- 15325125 - Incorporated on 3 December 2023 
- R E O'CONNOR LTDActive - Proposal to Strike off- 10455244 - Incorporated on 1 November 2016 
- MR JOHN BARNES DEVELOPMENTS LIMITED- 05212618 - Incorporated on 23 August 2004 
- JOHN O. HOLT & SON LIMITEDLiquidation- 01177178 - Incorporated on 12 July 1974 
- JOHN O GAUNT (LEICESTER) LIMITEDDissolved- 10841106 - Dissolved on 25 June 2019 
- JOHN O' GROATS DISTILLERY LIMITED- 15365143 - Incorporated on 20 December 2023 
- JOHN O' GAUNT (INGOL) LIMITEDDissolved- 07309293 - Dissolved on 8 January 2013 
- JOHN O`KEEFFE & SON LIMITEDDisolved- 04712444 - Dissolved on 1 October 2022 
- JOHN O`NEILL UTILITIES LIMITEDActive - Proposal to Strike off- 07004034 - Incorporated on 28 August 2009 
- JOHN O' GAUNT INN LIMITEDActive - Proposal to Strike off- 10189269 - Incorporated on 19 May 2016 
- M O'CONNOR LTDActive - Proposal to Strike off- 11701939 - Incorporated on 28 November 2018 
- C O'CONNOR LTD- SC629398 - Incorporated on 2 May 2019 
- CONNOR W LTDActive - Proposal to Strike off- 07024265 - Incorporated on 20 September 2009 
- G O'CONNOR LTDDisolved- 10393558 - Dissolved on 20 December 2022 
- M&M O'CONNOR LTDDisolved- 13770637 - Dissolved on 30 May 2023 
- CONNOR 231 LTD- SC817267 - Incorporated on 23 July 2024 
- DR JOHN O`DONOHUE LIMITED- 04841408 - Incorporated on 22 July 2003 
- MR NEVILLE ALPHONSO JOHNSON & MRS SARAH-JANE JOHNSON (ITV) (HEART FM) (AIB) UK PLCActive - Proposal to Strike off- 07304489 - Incorporated on 5 July 2010 
- MR NEVILLE JOHNSON & MRS SARAH JOHNSON (CORPORATE ADVANCES) UK LIMITEDDisolved- 08767910 - Dissolved on 25 April 2023 
- MR NEVILLE JOHNSON & MRS JULIE JOHNSON (CORPORATE ADVANCES) UK LIMITEDActive - Proposal to Strike off- 08896423 - Incorporated on 14 February 2014