- KEANE COLLECTIVE LTD- NI728958 - Incorporated on 28 April 2025 
- MALIK-O'BRIEN LLPDissolved- OC325378 - Dissolved on 13 October 2009 
- D.W. O'BRIEN LIMITEDDisolved- 01099894 - Dissolved on 1 March 2022 
- D P O'BRIEN LIMITED- 07064464 - Incorporated on 3 November 2009 
- E. J. O'BRIEN LIMITED- 06339441 - Incorporated on 10 August 2007 
- ROGER O'BRIEN LTDActive - Proposal to Strike off- 07910154 - Incorporated on 16 January 2012 
- M O'BRIEN LIMITED- 07911506 - Incorporated on 16 January 2012 
- H E J O'BRIEN LIMITED- 04646753 - Incorporated on 24 January 2003 
- J. O'BRIEN LIMITED- 05653237 - Incorporated on 13 December 2005 
- P O'BRIEN LIMITED- 08610850 - Incorporated on 16 July 2013 
- J & K O'BRIEN LIMITED- 09506055 - Incorporated on 24 March 2015 
- K J O'BRIEN LIMITED- 11237316 - Incorporated on 6 March 2018 
- REBEL O'BRIEN LTDActive - Proposal to Strike off- 12064456 - Incorporated on 21 June 2019 
- P & S O'BRIEN LIMITEDDisolved- 11086073 - Dissolved on 3 January 2023 
- O'BRIEN 72 LIMITED- 10432662 - Incorporated on 18 October 2016 
- O'BRIEN-PATEL LLP- OC436854 - Incorporated on 14 April 2021 
- JAMIE O'BRIEN LTDDisolved- 13833105 - Dissolved on 27 June 2023 
- BRIENZOLA LTDDisolved- 14147224 - Dissolved on 16 January 2024 
- MR & MRS S LTDActive - Proposal to Strike off- 12290244 - Incorporated on 30 October 2019 
- KEANE ON BUILDERS LTDDisolved- 12133268 - Dissolved on 27 September 2022