From 2001 to 2004, Gash was the national director of the National Union of Students.
He is currently the chairman of West Middlesex University Hospital NHS Trust, policy and public affairs advisor at AAT and an associate director at lobbyists Interel. Gash's jobs were declared on his wife's Register of Members' Financial Interests due him being 'engaged in lobbying the public sector on behalf of a third party or client'.
- Linkedin Nick Gash, accessed 23 July 2015.
- Parliament Publications Register of Members’ Financial Interests as at 13 July 2015, accessed 23 July 2015.