- PHILIP JEFFERIES LIMITED- 07131200 - Incorporated on 20 January 2010 
- ANTHONY JEFFERIES LIMITED- 07871752 - Incorporated on 5 December 2011 
- PETER JEFFERIES LIMITEDActive - Proposal to Strike off- 05233040 - Incorporated on 16 September 2004 
- JEFFERIES HOLDINGS LIMITED- 09554710 - Incorporated on 22 April 2015 
- JEFFERIES GROUP LIMITEDActive - Proposal to Strike off- 10414662 - Incorporated on 6 October 2016 
- JEFFERIES GROUP LIMITEDActive - Proposal to Strike off- 13355908 - Incorporated on 26 April 2021 
- LEAH JEFFERIES LIMITEDDisolved- 14713337 - Dissolved on 17 June 2025 
- JEFFERIES STUDIO LIMITEDDisolved- SC751559 - Dissolved on 12 September 2023 
- HODGSON JEFFERIES LIMITED- 16269641 - Incorporated on 22 February 2025 
- Timothy Lloyd, Mr. MAHONY- Born February 1958 - Churchill House Churchill Way, Cardiff, Wales, CF10 2HH 
- JEFFERIESROBERT LIMITEDDisolved- 14231148 - Dissolved on 9 January 2024 
- H.J. JEFFERIES LIMITED- 00492279 - Incorporated on 5 March 1951 
- N JEFFERIES LIMITEDLiquidation- 07504077 - Incorporated on 24 January 2011 
- R. C. JEFFERIES LIMITEDActive - Proposal to Strike off- 05876336 - Incorporated on 14 July 2006 
- JEFFERIES CYMRU LTDDisolved- 11463065 - Dissolved on 28 May 2024 
- C.J.JEFFERIES,LIMITED- 00391615 - Incorporated on 2 December 1944 
- C.M. JEFFERIES & CO. LIMITED- 00482686 - Incorporated on 30 May 1950 
- JEFFERIES NEWCO LIMITED- 07636626 - Incorporated on 17 May 2011 
- CLARKE JEFFERIES LIMITED- 07694173 - Incorporated on 5 July 2011 
- JEFFERIES FINANCING, LLP- OC365593 - Incorporated on 15 June 2011