- Because Canterbury Cathedral's windows had been taken out because of the air raids, the interior of the cathedral was rebuilt in Denham Studio.
- The Cathedral bells seen in the opening and closing shots were a miniature replica of Canterbury's Bell Harry Tower to allow the camera to track up to and through them. The bells were "rung" by bell ringers from the Cathedral who pulled the strings with finger and thumb to a playback of the real bells.
- The organ music had to be played on the St. Alban's cathedral organ because the one at Canterbury Cathedral had been dismantled and stored away for the duration of the war.
- The boys in the river battle were paid #9 each for two weeks work. #1 10/- when on standby and #3 per day when working.
- James Tamsitt had a haircut to make him look tidy before he went to London with Leonard Smith (II) and David Todd (I) to do some scenes at Denham Studio. But his new haircut didn't match the unruly mop he had in scenes filmed on location. So he had to wear a wig.
- Among the various books and pictures seen in Colpepper's sitting room is a photograph of the Shetland Island of Foula, the location of director 'Powell, Michael' 's first acclaimed feature film _Edge of the World, The (1937)_ .
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