- JOHN O'REILLY LIMITEDDissolved- 09737659 - Dissolved on 13 December 2016 
- O'REILLY & O'SULLIVAN LLP- OC397438 - Incorporated on 12 January 2015 
- O'REILLY 2018 LIMITEDDissolved- 11137440 - Dissolved on 20 November 2018 
- BERNARDAUD- SF000955 - Incorporated on 1 April 2004 
- FINEBUILD CONSTRUCTION LIMITEDActive - Proposal to Strike off- 09218457 - Incorporated on 15 September 2014 
- REILLY INTERNATIONAL LTDDissolved- 03807096 - Dissolved on 7 September 2010 
- KAYMAR PRINT LIMITED- 00416945 - Incorporated on 10 August 1946 
- O'REILLY CUMBRIA LLPDissolved- OC336618 - Dissolved on 17 April 2018 
- O'REILLY STEWART LIMITED- NI609494 - Incorporated on 14 October 2011 
- AIDAN O'REILLY LIMITEDDissolved- 05529429 - Dissolved on 31 December 2019 
- O'REILLY & ASSOCIATES LIMITED- 06730475 - Incorporated on 22 October 2008 
- O'REILLY CONSULTING LIMITED- 03034995 - Incorporated on 20 March 1995 
- O'REILLY SOLUTIONS LIMITEDActive - Proposal to Strike off- 09635254 - Incorporated on 11 June 2015 
- O'REILLY BUILDERS LIMITED- 08493256 - Incorporated on 17 April 2013 
- ADAMS O'REILLY LIMITED- 09982324 - Incorporated on 2 February 2016 
- O'REILLY CONSTRUCTION LTD.- 10194046 - Incorporated on 23 May 2016 
- O'REILLY HOLDINGS LIMITED- 11113518 - Incorporated on 15 December 2017 
- P O'REILLY LIMITED- 10653283 - Incorporated on 6 March 2017 
- REBECCA O'REILLY LIMITEDActive - Proposal to Strike off- 11617175 - Incorporated on 11 October 2018 
- O'REILLY MEDICAL LTD- 13301387 - Incorporated on 29 March 2021