- MARCO UK (2005) LIMITED- 05615165 - Incorporated on 8 November 2005 
- J B COLMAN LIMITEDActive - Proposal to Strike off- 11207743 - Incorporated on 15 February 2018 
- FRIENDS OF ST. COLM'S- NI054388 - Incorporated on 21 March 2005 
- COLMBO LIMITEDActive - Proposal to Strike off- 08594145 - Incorporated on 2 July 2013 
- COLMEC LIMITED- 09192337 - Incorporated on 29 August 2014 
- COLMED LIMITED- SC474015 - Incorporated on 1 April 2014 
- COLMATTTRADINGS LTDActive - Proposal to Strike off- 09097542 - Incorporated on 23 June 2014 
- COLMCLEARYPROPERTY LTDActive - Proposal to Strike off- 10639669 - Incorporated on 25 February 2017 
- COLMEP LIMITEDActive - Proposal to Strike off- 10734695 - Incorporated on 21 April 2017 
- COLMEN LIMITED- 14055931 - Incorporated on 20 April 2022 
- COLMBO LIMITED- 16251329 - Incorporated on 13 February 2025 
- M CONNORS LLPDissolved- OC315677 - Dissolved on 10 April 2007 
- TJ O'CONNOR LTDDissolved- 11000644 - Dissolved on 2 July 2019 
- PJ O'CONNOR LTDDisolved- NI645537 - Dissolved on 11 January 2022 
- O'CONNORS LLP- OC305740 - Incorporated on 8 October 2003 
- NJ CONNOR LTD- SC540732 - Incorporated on 21 July 2016 
- D. T. CONNOR & CO. LTD- 13448562 - Incorporated on 10 June 2021 
- MF CONNOR LTDActive - Proposal to Strike off- 13798579 - Incorporated on 13 December 2021 
- OD CONNOR LTDDisolved- 14112038 - Dissolved on 6 February 2024 
- TIMOTHY HAGUE LTDDisolved- 09271076 - Dissolved on 7 March 2023