- EB ONEILL LTDDisolved- 13718617 - Dissolved on 15 April 2025 
- ONEIL 2022 LIMITED- 14269396 - Incorporated on 2 August 2022 
- ONEIL ESTATES LTD- 16032510 - Incorporated on 21 October 2024 
- ONEIL WATFORD LIMITED- 06326572 - Incorporated on 27 July 2007 
- MICHAEL ONEIL LIMITEDActive - Proposal to Strike off- 10299548 - Incorporated on 27 July 2016 
- MARRIOTT AND MARRIOTT LIMITED- 08028609 - Incorporated on 12 April 2012 
- ONEILLS CAFE LIMITED- 13113566 - Incorporated on 5 January 2021 
- ONEILL SHE LTD- 04897930 - Incorporated on 12 September 2003 
- CAIN ONEILL LTD- SC395743 - Incorporated on 18 March 2011 
- ALAN ONEILL LTDDisolved- 13898307 - Dissolved on 15 April 2025 
- ONEIL SOLUTIONS LIMITEDActive - Proposal to Strike off- 10117694 - Incorporated on 11 April 2016 
- SHAUN ONEIL LIMITEDActive - Proposal to Strike off- 05746003 - Incorporated on 16 March 2006 
- ONEIL JONES LTDActive - Proposal to Strike off- 11009614 - Incorporated on 12 October 2017 
- ONEILLRAIL LTD- 10715603 - Incorporated on 7 April 2017 
- RYAN ONEILL (19492) LTD- 09407085 - Incorporated on 26 January 2015 
- ONEILLROSS LTD- SC587712 - Incorporated on 5 February 2018 
- ROQUES ONEIL LIMITEDActive - Proposal to Strike off- 07439712 - Incorporated on 15 November 2010 
- MIKE ONEIL LIMITED- 09820657 - Incorporated on 12 October 2015 
- DUNCAN ONEIL LIMITED- 10082151 - Incorporated on 23 March 2016 
- ONEIL RECRUITMENT LTDActive - Proposal to Strike off- 11177997 - Incorporated on 30 January 2018