Directed by: Robert Day
Starring: Peter Sellers, Bernard Cribbins, Wilfrid Hyde-White, David Lodge
Factual error: The prison in this film, Huntleigh prison, can't be very secure as the hinges are on the inside of the cell doors and the front gate opens directly into the exercise yard.
Factual error: Lenny says that he has seen the film "danger within" which was released in 1959 but two way stretch was released in 1960 and in this film Lenny has been in prison for the last three years so he couldn't have seen danger within.
Continuity mistake: When the Jeep at the head of the army convoy starts off again, after being stopped at the temporary traffic lights set up by the crooks, the external shots show the Jeep passing the traffic lights. But the next shots from inside the Jeep show them passing the traffic lights a second time.
The Rev Fowler: I'll remember you all tonight in my prayers, boys.
Dodger: We'll be lucky if he remembers us after the second pint.