Frankengram
Hi Pete
Great to hear from you. What an interesting find you have there.
I think think you have a bit of a Frankengram there, by which I mean it has been made over with different parts. My first reaction when I saw the pictures was "that TV tube looks very square for a cabinet of that age". Likewise with the BSR record changer. I recall seeing that TV tuner on a 1970s Philips B&W TV in the 1970s it was 17" white molded plastic on a molded plastic pedestal base. The cabinet itself looks late 1950s/early 1960s perhaps Grundig. I have seen some with had the record player in one side and a wine cabinet on the other and indeed the record changer side looks rather like that might have been its original function. The knobs look 1970s as well. Interesting find though, Granada TV rentals - there is a name from the past!
Al