Thomas began his film career at
Denham Studios, eventually becoming an assistant film editor beginning with
Laurence Olivier's
Hamlet (1948). His editing work included many films directed by his older brother,
Ralph Thomas. His directorial debut was the
short film Circus Friends (1956), produced by the
Children's Film Foundation. His first feature was the thriller
Time Lock the following year. ending with
Carry On Emmannuelle (1978) and the belated
Carry On Columbus (1992). Additionally, he directed the framing sequences of the compilation film ''
That's Carry On! (1977). Other works as a director include the comedy Please Turn Over (1959) and a drama of post-war Austria, The Second Victory'' (1986). ==Personal life==