- DEREK COYLE LIMITEDActive - Proposal to Strike off- 06345595 - Incorporated on 16 August 2007 
- DEREK LLOYD LIMITEDDisolved- 09509304 - Dissolved on 20 May 2025 
- DEREK A JONES LIMITEDDissolved- 09584549 - Dissolved on 8 October 2019 
- DEREK BLAIR LIMITED- 09166060 - Incorporated on 7 August 2014 
- DEREK BRUCE LIMITED- 10513450 - Incorporated on 6 December 2016 
- DEREK DODGE LIMITEDActive - Proposal to Strike off- 11053891 - Incorporated on 8 November 2017 
- ROSSI & ROSSI CONSULTING LTD- 15434996 - Incorporated on 23 January 2024 
- ROSS YOUNG'S HOLDINGS LIMITED- 00254763 - Incorporated on 11 March 1931 
- DEREK GLADWIN LIMITEDDisolved- 00810899 - Dissolved on 6 October 2023 
- DEREK THOMAS LIMITED- 00685231 - Incorporated on 3 March 1961 
- DEREK ROBINSON LIMITEDActive - Proposal to Strike off- 00922836 - Incorporated on 17 November 1967 
- DEREK INGRAM LIMITED- 01029730 - Incorporated on 4 November 1971 
- DEREK BARLOW LIMITEDActive - Proposal to Strike off- 01701445 - Incorporated on 22 February 1983 
- DEREK CROWSON LIMITED- 01996580 - Incorporated on 6 March 1986 
- DEREK GREENHORN LIMITED- SC144688 - Incorporated on 1 June 1993 
- DEREK COLLOFF LIMITED- 04714067 - Incorporated on 27 March 2003 
- DEREK MATHEWS LIMITED- 05099993 - Incorporated on 13 April 2004 
- DEREK MCCULLOCH LIMITEDDissolved- 06638105 - Dissolved on 4 February 2014 
- DEREK ELSLEY LIMITEDDissolved- 07627324 - Dissolved on 15 October 2019 
- DEREK LAWRENCE LIMITED- 06565586 - Incorporated on 15 April 2008