Editing In Which We Serve (section)

===Locations===
Interiors were filmed at [[Denham Studios]], in [[Denham, Buckinghamshire|Denham]], [[Buckinghamshire]]. 
The destroyer {{HMAS|Nepal|G25|6}} played HMS ''Torrin''.<ref>{{cite book|last=Cassells |first=Vic |title=The Destroyers: their battles and their badges |year=2000 |publisher=Simon & Schuster |location=East Roseville, NSW |isbn=0-7318-0893-2 |oclc=46829686 |page=60}}</ref> The Kinross family picnic scene, set during the [[Battle of Britain]] in 1940, was filmed on location on the [[Dunstable Downs]] in [[Bedfordshire]].

Although the filmmakers took great care to conceal locations because of wartime censorship, scenes were shot at [[Plymouth]]'s [[HMNB Devonport|naval dockyard]] in Devon and the naval station on the [[Isle of Portland]]. For example, the departure of Blake and Hardy was filmed in front of Devonport's original main entrance, the Keyham Dock Gate. <!-- It's quite obvious from watching the scene that the location is real (https://www.francisfrith.com/devonport/devonport-keyham-dock-gate-1890_22451) but a painted screen has been erected through the gate – probably a requirement of wartime censorship (although there is some debate as to whether this was an interior studio shot)<ref>{{cite web|url=https://www.reelstreets.com/films/in-which-we-serve/|title=In Which We Serve|website=reelstreets.com|access-date=4 October 2019}}</ref>  -->[[Smeaton's Tower]] on the seafront at [[Plymouth Hoe]] was used for the shore-leave scenes between Shorty Blake (Mills) and his wife Freda ([[Kay Walsh]]).