- ALANA MCKAY LIMITEDActive - Proposal to Strike off- 10162646 - Incorporated on 4 May 2016 
- MCKAY LANDSCAPES LTDDisolved- 12193032 - Dissolved on 14 November 2023 
- MCKAY ACCOUNTANCY LTD- 11141761 - Incorporated on 10 January 2018 
- VICTORIA MCKAY LIMITED- 13166588 - Incorporated on 29 January 2021 
- MCKAY CATERING LIMITED- 14126197 - Incorporated on 23 May 2022 
- MCKAY TRAINING LIMITED- SC779896 - Incorporated on 22 August 2023 
- MCKAY SERVICE LIMITEDActive - Proposal to Strike off- 15507400 - Incorporated on 20 February 2024 
- MCKAY TRANSPORT LTD- SC851670 - Incorporated on 9 June 2025 
- IMPACT UTILITIES LIMITEDLiquidation- 08971998 - Incorporated on 2 April 2014 
- JOSEPH BONNAR JEWELLERS- SC101137 - Incorporated on 1 October 1986 
- D JOSEPH LTDDissolved- 10457546 - Dissolved on 26 February 2019 
- JOSEPH J&D LTDDisolved- 15011939 - Dissolved on 24 December 2024 
- JOSEPH12 LTDDisolved- 15198806 - Dissolved on 14 January 2025 
- MCKAY SECURITIES LIMITED- 00421479 - Incorporated on 14 October 1946 - 20 Greyfriars Road, Reading, RG1 1NL 
- LAURA MCKAY LIMITED- 06870894 - Incorporated on 6 April 2009 
- MCKAY CONSULTANTS LIMITEDDissolved- 06944334 - Dissolved on 1 February 2011 
- MCKAY & MCLAREN LIMITEDDissolved- SC264520 - Dissolved on 18 June 2010 
- MCKAY WILLIAMSON LIMITEDDisolved- 04493665 - Dissolved on 5 April 2023 
- JULIAN MCKAY LIMITEDActive - Proposal to Strike off- 06742706 - Incorporated on 6 November 2008 
- MCKAY (DUNDONALD) LIMITED- NI026968 - Incorporated on 28 October 1992