Modern concrete sleepers and rail fixings are seen during the scene at the railway station set in 1944.
Mrs Oldknow's car has the registration 445 YYC. In 1944 all vehicle registrations were three letters followed by one to three numerals, or, on older vehicles, two letters and up to four numerals. This system had not yet run out of combinations. Putting the numbers first would not begin until 1953.