- IVOR GORDON LIMITEDActive - Proposal to Strike off- 01461460 - Incorporated on 15 November 1979 
- IVOR ALLISON LIMITED- 06114052 - Incorporated on 19 February 2007 
- IVOR LOT LIMITED- 03430381 - Incorporated on 5 September 1997 
- IVOR MEDICAL LTD.Dissolved- 08786978 - Dissolved on 9 April 2019 
- IVOR CONSULTANCY LIMITEDDissolved- 04429717 - Dissolved on 2 August 2011 
- IVOR SILVERMAN LTDActive - Proposal to Strike off- 11828425 - Incorporated on 15 February 2019 
- IVOR INVESTMENTS LIMITED- 12400876 - Incorporated on 13 January 2020 
- IVOR SOLUTION LIMITED- 13641081 - Incorporated on 24 September 2021 
- IVOR ASTON LIMITED- 14358165 - Incorporated on 15 September 2022 
- EH JOHNSTONE LTDActive - Proposal to Strike off- 11890136 - Incorporated on 19 March 2019 
- DD JOHNSTONE LTDDisolved- 13893769 - Dissolved on 20 February 2024 
- RJ JOHNSTONE LTDDisolved- 13708699 - Dissolved on 14 March 2023 
- A K DUNCAN LTDDissolved- 04439595 - Dissolved on 29 December 2009 
- E.J. DUNCAN LTD- 03221200 - Incorporated on 5 July 1996 
- A K DUNCAN (2008) LTD- 06659970 - Incorporated on 30 July 2008 
- DUNCAN 121 LTDDissolved- 06768273 - Dissolved on 20 July 2010 
- IVOR WILSON LTD- NI701947 - Incorporated on 18 September 2023 
- IVOR HOLDINGS LIMITED- 00477239 - Incorporated on 14 January 1950 
- IVOR HOLMES LIMITED- 00645538 - Incorporated on 24 December 1959 
- IVOR SHAW LIMITED- 00755641 - Incorporated on 29 March 1963