Donald Sinden who plays Lt. Sylvester Green and Bryan Coleman who plays Lt. Comdr. Voles would later appear together in S2 E1 Who's Been Sleeping in My Bed? (1982) of Never the Twain (1981).
The Royal Navy warship featured in the film is HMS Tyrian.
The "Trade" Show took place 4 days before the premiere at the Leicester Square Theatre, London on Friday 5th February 1954 starting at 10.30 a.m.