- MCKAY (NEWTOWNARDS) LIMITED- NI011586 - Incorporated on 28 October 1976 
- SANDRA MCKAY LIMITEDLiquidation- 01833281 - Incorporated on 16 July 1984 
- CRAIG MCKAY LIMITED- 08294023 - Incorporated on 15 November 2012 
- MCKAY SOLUTIONS LIMITEDDissolved- 10354568 - Dissolved on 20 November 2018 
- MCKAY ENGINEERING LIMITEDDisolved- SC638039 - Dissolved on 7 December 2021 
- MCKAY VENTURES LIMITED- 13862810 - Incorporated on 20 January 2022 
- MCKAY MARKETING LIMITEDDisolved- NI693826 - Dissolved on 7 May 2024 
- MCKAY MORTGAGES LTD- SC780010 - Incorporated on 22 August 2023 
- MCKAY PROJECTS LIMITED- 15170543 - Incorporated on 28 September 2023 
- MCKAY HOSPITALITY LIMITED- 15294475 - Incorporated on 20 November 2023 
- A.& A. O'NEILL LTD- 06813836 - Incorporated on 9 February 2009 
- NEILA LTDDisolved- 07056886 - Dissolved on 4 April 2025 
- R. O'NEILL LTDActive - Proposal to Strike off- 05668890 - Incorporated on 9 January 2006 
- NEIL GR LLP- OC447885 - Incorporated on 23 June 2023 
- NEILZ LTD- 15836044 - Incorporated on 12 July 2024 
- NEIL MC LTD- 16262890 - Incorporated on 19 February 2025 
- MR.MR LIMITEDDissolved- 06898238 - Dissolved on 17 December 2013 
- MR & MRS SYAL LTD.- SC595450 - Incorporated on 26 April 2018 
- MR & MRS FOOD LTDLiquidation- 12061478 - Incorporated on 20 June 2019 
- MR & MRS SHAW LTDDisolved- 13512942 - Dissolved on 17 January 2023