"John Nash was educated at Corpus Christi College, Oxford where he read law and then became a barrister. He practiced briefly and then went into the City. He worked at Lazards for 8 years and became an Assistant Director and then left in 1983 to go into the venture capital business joining Advent Limited, of which he became Managing Director in 1987. In 1988 John set up Sovereign Capital, a venture capital firm which specialises in investing in service businesses in the UK. John is a former Chairman of the British Venture Capital Association and also Chairman of Future, a charity he and his wife, Caroline, established to focus on young people which supports a number of inner-city projects and sponsors Pimlico Academy."
"John Nash established, with his wife Caroline, the charity Future, which focuses on young people and supports a number of inner-city projects. Future also sponsors Pimlico Academy, a 1300 pupil secondary school in Westminster, of which he is Chairman." 
"John Nash is also a Non-Executive Director of the Department for Education and was a member of HM Treasury’s Independent Challenge Group in relation to the Comprehensive Spending Review. During his career John has started or financed a number of highly successful businesses including the software company, Borland International, the health and fitness business, Esporta, and Care UK plc (Chairman 1992-2010), a health care services business. He is a Foundation Fellow of Corpus Christi College, Oxford and a member of its Investment and Development Committees. He is a former Finalist Judge for the Prince of Wales Award for Innovation... Future supports a number of inner city projects for young people such as Chance UK, The Social Mobility Foundation, Eastside Young Leaders Academy and Jamie's Farm, sponsors Pimlico Academy and conducts research on issues facing young people. " 
Married to Caroline Nash.
- Trustee, Centre for Policy Studies
- Governor (chair), Pimlico Academy
- Non-Executive Chairman, Sovereign Capital Partners LLP
- Director, Westerleigh Group Plc
- Director, Stourbridge Properties Limited
Apple (I.T.) Aviva plc (insurance) BG Group plc (oil and gas) CVS (UK) Limited (veterinary centres) Dr Pepple Snapple Group (drinks) Laird plc (electronics) Royal Dutch Shell plc (oil) D S Smith plc (packaging products) Synergy Health plc (sterilisation/laundry) Vodafone Group plc (telecoms) Volkswagen Cars Roche (pharmaceuticals) Mazda (cars) Unite Group (property) Whitbread plc (hotels and beverages) Lonshot Kids Limited (leisure) Hayward Tyler Group plc (industrial engineering)
- Lord Help Us – Tory Donor Made Peer Reveals Broken System", Social Investigations, 17 February 2013.