Christopher was elected as MP for Mid Dorset and North Poole (1997–2001) and Norfolk South West (2002–10).
Whilst in Parliament he was a member of numerous committees including the Culture, Media & Sport Select Committee. He is now Strategic Counsel at BNY Mellon and a Board member of the oil company Plexus. He is a Director of British American Business, Freeman of the City of London, Chairman of the Conservative Alumni and a member of the Athenæum Club.
Christopher was awarded an OBE in the 2013 New Year Honours for public and political service.