Those look like Jowett Jupiter wheels and hubcaps on No 7.
I checked the DVLA database, and there is a car with that registration number which is currently licensed (assuming I've read it correctly and the last letter is W - it looks a bit narrow).
It's registered as "Jowett Javelin" in the "make" field, but it can't be an original number, as the date of registration is May 1962. The year of manufacture is listed as "not available". So I don't know if it's this actual car or not - the number could have been reallocated.
That's all I have found - can anyone else get any further with it?