Indentify this make of car ?

Think you've got the aspect ratio wrong. But it could be a Lanchester.

In message , "Dave Plowman (News)" writes

Yes, it looks too wide! It reminds me of my favourite uncle's Morris 10/4, and that would be mid - 1930s.

Rover P2 (Look at the number plate!)

Wikilies says 1937-48.

Definitely not a Rover.

Could be Hillman 20/70 or a Morris 25, or indeed a Lanchester as suggested.

Of particular note is 1 - the square topped windscreen with outwards angled sides, 2 - the spare wheel on the driver's side, 3 - the bumper and 4 - vertical chrome bar in grille.

The registration could be non-UK (but UK style like old British colonies which used UK style plates)

This appears to be a photo/screen capture from a TV. What was the programme/film?

Yes, i looks looks a posh car of substantial size; notice the spare wheel on the front wing. It may have soft top. Possibly a state official car, if this gives any ideas. In those days, there were many more different car manufacturers as cars were more individually produced in smaller factories, that makes the hunt even more difficult.