The host is the late Jimmy Savile...the BBC's in-house pedophile. He is creepy.
The series...there are 8 of them...are film.
http://www.ovguide.com/pop-gear-9202...000000057b99ab
Nothing that wide in the mid-60's analog days. The framing is correct for what you see.
As an old studio tv guy, the lighting is pure tv studio lighting techniques but shot on film which can trick you.
If it was letterboxed later there would have been all kinds of excess framing above and below for air in 1965 4x3.