The Girl in the Picture

It is established that Pat Dryden lives in "Myrtle Mansions" as the name is clearly seen on the outside of the building (which is actually Hammersmith Town Hall). When Deering calls Detective Inspector Bliss he mistakenly gives Pat's address as "20 Milstrom Mansions, Kensington". When Deering later accuses Bliss of being "late again", Bliss blames it on the traffic and counters by saying that: "We should have been quicker, if you had got the address right". The scene immediately cuts to a policeman who confounds the Inspector by calling for an ambulance to come to "Milstrom Place".

British police cars in the 1950s had a bell instead of a siren. The Wolseley 6/80 used in the film clearly shows the chromium plated bell visible above the front bumper as the squad car is driven to Mrs Stokes' home. In a following scene where the same car pulls up at the chemist's shop, having been driven there directly from Mrs Stokes' house, the bell is missing.