Vansittart was born in Merton, then within Surrey but subsequently part of Greater London, and began his youth career at Crystal Palace, signing professional terms in April 1967.
[2] He made his senior debut on 23 March 1968, in a home 1–1 draw against Carlisle United and went on to make seven League appearances that season, scoring twice in a 6–0 home win over Norwich City on 16 April.
[3] Vansittart did not make an appearance in the 1968–69 season when Palace gained promotion to the top tier for the first time, but played four times in the following season,[4] before moving on to Wrexham in February 1970.
[2] At Wrexham, Vansittart made 88 appearances, scoring once, before moving into non-league football with Wimbledon in 1975.
This biographical article related to association football in England, about a defender born in the 1950s, is a stub.