Loophole is a 1981 British heist crime film directed by John Quested and starring Albert Finney, Martin Sheen, Susannah York, Jonathan Pryce, Colin Blakely and Tony Doyle.
Booker angrily rejects the first approach from Daniels but later, harassed by his bank manager (played by Robert Morley) and having to support a new business venture by his wife (Susannah York), he agrees on the undertaking, provided that no violence is to be used.
With Gardner (Colin Blakely) keeping watch from a rented nearby office, the titular loophole of the sewer access is utilized by the robbery crew, setting off the bank alarms on entering the vault from beneath and continuing to empty the contents when the police arrive.
Variety said that the core of the plot was one of the few bright spots of the movie but went on to say that the film didn't give Albert Finney and Martin Sheen a chance to show their talents, owing to the script's quality.
[4] Spinning Image gave the film 5 out of 10 stars with the overall summary of the review being that there wasn't enough peril, that the plot of the heist was too straightforward for most people and that the ending was rushed.