Christopher was born and schooled in Kenya, moving to study medicine at Edinburgh in 1960. He joined the Royal Army Medical Corps as a medical cadet in 1963 and graduated in 1966.  After completing house jobs in Edinburgh he started full-time service in 1967.  Between then and 2000 he served in UK (the then BAOR) and in Belgium.  He had three tours in Germany – in Minden, Verden-Aller and latterly as Commander Medical in Rheindahlen (1993-96).  He set up a new, tri-service medical training agency in 1997 (the Defence Medical Training Organisation) and his last appointment was Chief Executive of the then Defence Secondary Care Agency, responsible for hospital services for the Armed Forces.  He retired from the Army in 2000 and has been involved with National Eye Research Centre since 2001. He lives in the Yorkshire Wolds and has three grown up children and four grandchildren.