Before becoming a journalist, Vincent was employed by a rolling paper company. From 1965, Vincent she wrote frequently for the new Nova magazine, later moving to the Daily Mirror, where she wrote a beauty column, then a column on cookery that was subsequently taken over by Delia Smith. Vincent also wrote for Punch and for The Sunday Times. In 1975 she appeared as a reporter and presenter in the four television broadcasts made by the National Referendum Campaign, advocating a No vote in the referendum on EC membership.
