Quatermass 2
(1957, Brian Donlevy)
Scenes filmed at a village in Buckinghamshire and at a Shell oil refinery in Essex feature doubledeckers. The front bus of this pair is a Leyland Titan, but
what is the second?
These 'deckers are different, but the front also appears to be a Leyland Titan!
Scenes in London feature a passing Bedford SB:
In the same sequence, we see a roofbox AEC RT and a Leyland RTL:
This glimpsed saloon in London traffic is interesting:
These RT family buses less so, perhaps; some of the sequence is back projected: