Lunch Hour is a 1962 British romantic comedy drama film directed by James Hill and starring Shirley Anne Field, Robert Stephens and Kay Walsh.

[8] According to Mortimer's biographer Valerie Grove, his affair with Craig during the production of his play The Wrong Side of the Park may have inspired the writing of Lunch Hour.

[6] Mortimer wrote a TV adaptation of the play, Kings Cross Lunch Hour, which was broadcast on 29 May 1972 as part of BBC Two's Thirty Minute Theatre series, with Joss Ackland and Pauline Collins.

[11] Sight and Sound wrote: "John Mortimer's almost-adulterous drama about an illicit rendezvous between nervous London co-workers is a sharp-eyed snapshot of a society still mired in post-war prudishness but on the brink of swinging. ...

Cosy rather than cutting but with a strong whiff of cultural change ... its zesty exploration of empowering female frustration makes it a thought-provoking addition to the lad-centric catalogue of early 1960s British cinema".

Lunch Hour has all the New Wave preoccupations with class and pre-Pill sexual morality of the time, but unlike Alfie or Saturday Night and Sunday Morning it gives Field something substantial to do."