- Simon John, Mr. JOHNSTON- Born December 1960 - Lacon House, 84 Theobald's Road, London, WC1X 8RW 
- MR & MRS CAFE LTD- 15977769 - Incorporated on 25 September 2024 
- MR & MRS GABA LTD- 16174315 - Incorporated on 9 January 2025 
- CARDO (CENTRAL) LIMITED- 06649643 - Incorporated on 17 July 2008 
- DAVID JEFFERIES ASSOCIATES LIMITEDDissolved- 02802670 - Incorporated on 23 March 1993 
- LANE, JEFFERIES & ASSOCIATES LIMITED- 06155591 - Incorporated on 13 March 2007 
- JEFFERIES MARKET RESEARCH LIMITEDActive - Proposal to Strike off- 09243751 - Incorporated on 1 October 2014 
- DALE JEFFERIES ASSOCIATE LIMITED- 08836865 - Incorporated on 8 January 2014 
- ALEXANDER JEFFERIES PARTNERSHIP LLP- OC448055 - Incorporated on 5 July 2023 
- MR & MRS LARK LTDDissolved- 08146557 - Dissolved on 26 November 2019 
- ALAN JEFFERIES ASSOCIATES LLPDissolved- OC343820 - Dissolved on 30 July 2013 
- JEFFERIES AUTOMOTIVE SYSTEMS LIMITED- 02155755 - Incorporated on 20 August 1987 
- MARK JEFFERIES ASSOCIATES LIMITED- 07890502 - Incorporated on 22 December 2011 
- JEFFERIES INTERNATIONAL (HOLDINGS) LIMITEDLiquidation- 03977886 - Incorporated on 20 April 2000 
- JEFFERIES, BUILDING & ROOFING LTD- 08259037 - Incorporated on 18 October 2012 
- JEFFERIES PROPERTY INVESTMENT LIMITED- 09728316 - Incorporated on 11 August 2015 
- ERNEST & JEFFERIES ASSOCIATES LIMITED- 09152025 - Incorporated on 29 July 2014 
- LLOYD JEFFERIES CONSTRUCTION LTDActive - Proposal to Strike off- 10513273 - Incorporated on 6 December 2016 
- JADE JEFFERIES DESIGN LIMITEDDisolved- 14301982 - Dissolved on 23 January 2024 
- JEFFERIES JAMES LONDON LIMITED- 13337979 - Incorporated on 15 April 2021