<sod>He began his movie career at [[Denham Film Studios|Denham Studios]], eventually becoming an assistant film editor beginning with [[Laurence Olivier]]'s ''[[Hamlet (1948 film)|Hamlet]]'' (1948). His editing work included many films directed by his older brother, [[Ralph Thomas]]. His own 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.<ref name=screenonline /><eod>
<sod>He began his movie career at [[Denham Film Studios|Denham Studios]], eventually becoming an assistant film editor beginning with [[Laurence Olivier]]'s ''[[Hamlet (1948 film)|Hamlet]]'' (1948). His editing work included many films directed by his older brother, [[Ralph Thomas]]. His own 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.<ref name=screenonline /><eod>