The son of Dixon and Alice Winifred Smith, Dixon-Smith was educated at
Oundle School, at the
St. Johnsbury Academy in
Vermont, and Writtle Agricultural College in
Essex. He served in the
King's Dragoon Guards in the years 1956 and 1957, serving as a
Second Lieutenant. From 1967 to 1994, Dixon-Smith was Governor of the Writtle Agricultural College, from 1973 to 1985 chair. In 1993 and 1994, he was Chair of Anglia Polytechnic University governors, governor from 1973 to 2000 of what was originally Cambridgeshire College of Arts and Technology (now
Anglia Ruskin University). Dixon-Smith was elected to the
Essex County Council in 1965, being vice chairman from 1983 to 1986, and chairman from 1986 to 1989 before losing his seat to Labour in
1993. He was briefly
Shadow Minister for Environment. In 1994, he was made an Honorary Doctor at
Anglia Ruskin University. ==Life peer==