- MR MRG LTDDisolved- 14226733 - Dissolved on 19 December 2023 
- MR&MRS B.A.D LTDDisolved- 15544690 - Dissolved on 4 February 2025 
- GRETA MCMAHON LIMITEDDissolved- 05012882 - Dissolved on 5 July 2011 
- MCMAHON CONSTRUCTION LIMITEDDissolved- 06849752 - Dissolved on 22 March 2011 
- FUSION MCMAHON LIMITED- 07680411 - Incorporated on 23 June 2011 
- ANDREW MCMAHON LIMITEDActive - Proposal to Strike off- 07795589 - Incorporated on 3 October 2011 
- GRIGO-MCMAHON LIMITED- 05032861 - Incorporated on 3 February 2004 
- MCMAHON FRUITERS LIMITEDDisolved- 05200743 - Dissolved on 11 July 2023 
- MICK MCMAHON LIMITEDActive - Proposal to Strike off- 08792701 - Incorporated on 27 November 2013 
- DOIREANN MCMAHON LTD- 08450099 - Incorporated on 19 March 2013 
- MCMAHON DEVELOPMENTS LTDDissolved- 08625646 - Dissolved on 27 November 2018 
- MCMAHON PROPERTIES LIMITEDDisolved- 09515435 - Dissolved on 8 July 2025 
- MCMAHON PROJECTS LTD- 10935577 - Incorporated on 29 August 2017 
- MCMAHON & WEST LIMITEDLiquidation- 12091426 - Incorporated on 8 July 2019 
- MCMAHON BUTCHERS LTD- NI677499 - Incorporated on 18 March 2021 
- CLEGG PLAYING FIELD 2015- CE007046 - Incorporated on 19 July 2016 
- IAIN MCMAHON LIMITED- SC275679 - Incorporated on 5 November 2004 
- STEPHEN MCMAHON LIMITEDActive - Proposal to Strike off- 07098213 - Incorporated on 8 December 2009 
- AIDAN MCMAHON LIMITED- 04750679 - Incorporated on 1 May 2003 
- JASON MCMAHON LIMITEDDissolved- 04455421 - Dissolved on 10 September 2013