- CONNOR RAIL.LTDDissolved- 06468448 - Dissolved on 29 November 2011 
- BELLE & BARK LTD.- 12619242 - Incorporated on 22 May 2020 
- P & S O'CONNOR LLPActive - Proposal to Strike off- OC367397 - Incorporated on 17 August 2011 
- A L G O'CONNOR LTDDisolved- SC500196 - Dissolved on 20 June 2023 
- G QUINNS LTD- 09270554 - Incorporated on 20 October 2014 
- J&K O'CONNOR LLPActive - Proposal to Strike off- OC383630 - Incorporated on 21 March 2013 
- R & C CONNOR LTDDissolved- 09458743 - Dissolved on 16 August 2016 
- LV QUINN LTDDisolved- 13903217 - Dissolved on 8 August 2023 
- ZT QUINN LTDDisolved- 13948942 - Dissolved on 16 April 2024 
- QUINN JO LTDDisolved- 13954455 - Dissolved on 8 August 2023 
- OZ QUINN LTDDisolved- 13728474 - Dissolved on 17 June 2025 
- QUINN BC LTD- 14744188 - Incorporated on 21 March 2023 
- C CONNOR LTD- 14825859 - Incorporated on 25 April 2023 
- 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 
- ZO QUINN LTDDisolved- 14636606 - Dissolved on 15 July 2025 
- F.J.QUINN & CO. LTD- NI703280 - Incorporated on 17 October 2023 
- QUINN-QA LTDActive - Proposal to Strike off- 07742099 - Incorporated on 16 August 2011 
- QUINN & CO LTD- 07598902 - Incorporated on 11 April 2011 
- QUINNY LTDDisolved- 09186975 - Dissolved on 18 June 2024