- RONAN HAULAGE LTDActive - Proposal to Strike off- NI047344 - Incorporated on 26 July 2003 
- ST RONANS WOOD LTDDisolved- SC745943 - Dissolved on 3 June 2025 
- JET PETROL LIMITED- NI028342 - Incorporated on 6 April 1994 
- RONAN LAVERTY LTDDisolved- 12805681 - Dissolved on 11 January 2022 
- RONAN AMR LIMITEDActive - Proposal to Strike off- SC416723 - Incorporated on 10 February 2012 
- DR. RONAN KAVANAGH- NI614229 - Incorporated on 29 August 2012 
- COIS COILLE SERVICES LIMITED- NI602700 - Incorporated on 31 March 2010 
- RONANT LIMITEDregistered- OE006481 - Incorporated on 6 December 2022 
- S. RONAN JOINERY LTD- 05899314 - Incorporated on 8 August 2006 
- J. G. RONAN AND SONS LIMITED- 04662657 - Incorporated on 11 February 2003 
- C KELLY ELECTRICAL LIMITED- NI065894 - Incorporated on 13 August 2007 
- RONANDA LIMITED- 07473550 - Incorporated on 20 December 2010 
- RONAN MC GROGAN LTDDisolved- 07596598 - Dissolved on 24 July 2023 
- RONAN FARRELL LTDDissolved- 08477059 - Dissolved on 19 May 2015 
- RONAN MCKEOWN LTD- NI638822 - Incorporated on 2 June 2016 
- GALLAGHER & DAUGHTERS LTD- 09382801 - Incorporated on 12 January 2015 
- RONAN PROPERTIES LIMITED- 13148554 - Incorporated on 21 January 2021 
- RONAN CONTRACTS LIMITED- 15058752 - Incorporated on 8 August 2023 
- RONAN ENGINEERING LIMITED- 01315747 - Incorporated on 1 June 1977 
- RONAN KELLY LIMITEDActive - Proposal to Strike off- NI629525