The original "Up the Armada" title didn't find favor with the British Board of Film Censors. They declined to allow the title despite that there had actually been an earlier British comedy called Further Up the Creek (1958).
Second picture in the "Carry on..." series to be filmed in color.
First screenplay in the "Carry on..." series written by Talbot Rothwell, though Carry on Cabby (1963), which he also penned, had been produced first. Rothwell would go on to write another twenty "Carry on..." scripts in total.