- T. A. RONAN LTD- 00890628 - Incorporated on 27 October 1966 
- RONAN HR LTD- 15141200 - Incorporated on 15 September 2023 
- IT'S RONAN LTD- NI679825 - Incorporated on 7 June 2021 
- RONANST LTDDisolved- 15173247 - Dissolved on 4 March 2025 
- RONAN'S TRUST- CE006551 - Incorporated on 29 April 2016 
- RONAN FOX LTD- 16243475 - Incorporated on 11 February 2025 
- RONAN LIMITED- 06298171 - Incorporated on 2 July 2007 
- SL020365 LP- SL020365 - Incorporated on 17 April 2015 
- RONAN ROSS LTD- 07161664 - Incorporated on 18 February 2010 
- C RONAN RAIL LTDDisolved- 12104831 - Dissolved on 30 November 2021 
- RONAN STONE LTDLiquidation- 08132283 - Incorporated on 5 July 2012 
- E.RONAN LIMITEDActive - Proposal to Strike off- 10592633 - Incorporated on 31 January 2017 
- RONAN'S BOYS LTD.Active - Proposal to Strike off- 10435950 - Incorporated on 19 October 2016 
- MODE INTERIORS (NOTTM) LTD- 10380808 - Incorporated on 17 September 2016 
- RONAN MALONE LTD- 16569092 - Incorporated on 8 July 2025 
- RONAN DALTON LTDActive - Proposal to Strike off- 10630570 - Incorporated on 21 February 2017 
- TECNI-BUILD (NORTHERN) LIMITED- 05268715 - Incorporated on 25 October 2004 
- LIONSPRING ENTERPRISES LIMITEDDisolved- 02068048 - Dissolved on 28 May 2024 
- RONAN HEATING LTDDisolved- 13517169 - Dissolved on 18 July 2023 
- ST. RONANS LIMITED- 05159197 - Incorporated on 21 June 2004