- TOM MCKAY LTDActive - Proposal to Strike off- 11581971 - Incorporated on 21 September 2018 
- THE BATHROOM SPECIALIST LTDDisolved- 09363107 - Dissolved on 21 February 2023 
- MCKAY & SONS LTDLiquidation- 03909393 - Incorporated on 19 January 2000 
- MCKAY STABLEDissolved- 07835822 - Dissolved on 19 March 2013 
- RICH MCKAY LTDActive - Proposal to Strike off- 11285299 - Incorporated on 31 March 2018 
- MCKAYS EXP LTDDisolved- 06760570 - Dissolved on 19 April 2024 
- MCKAY LIMITEDDisolved- SC124237 - Dissolved on 4 February 2025 
- MCKAYCOM LTD- 07154997 - Incorporated on 11 February 2010 
- JOCK MCKAY LTDActive - Proposal to Strike off- 10926568 - Incorporated on 22 August 2017 
- MCKAY-FOX & CO LTDActive - Proposal to Strike off- 12380002 - Incorporated on 30 December 2019 
- FORT MCKAY LTD- NI649060 - Incorporated on 3 November 2017 
- MCKAY MECH LTDActive - Proposal to Strike off- SC624713 - Incorporated on 18 March 2019 
- MCKAY BROS LTDDisolved- NI633506 - Dissolved on 11 January 2022 
- MCKAY & SONS LTD- 15277990 - Incorporated on 13 November 2023 
- JOSEPH JOSEPH LTD.- 04609769 - Incorporated on 5 December 2002 
- W MCKAY & SONS LTD- NI066462 - Incorporated on 28 September 2007 
- GRANT & MCKAY LTDDissolved- SC403899 - Dissolved on 25 June 2019 
- D A MCKAY LIMITEDActive - Proposal to Strike off- 06909945 - Incorporated on 19 May 2009 
- MCKAY SALES LTD.Active - Proposal to Strike off- 08730721 - Incorporated on 14 October 2013 
- S W MCKAY LIMITEDDisolved- 10871984 - Dissolved on 20 July 2021