Hi all,
Well my dad has had a look at both the photo and the advert showing the Austin 7s.
He's sure it isn't an Austin 7, because amongst other things there is no petrol tank just below the windscreen, the mudguards are the wrong shape, the wheels are wrong...etc etc.

I got a bit lost after that. However, he does reckon that the car would be about a 1930 vintage, give or take a couple of years.
In closing his comment was "it's not an Austin 7, but it's definitely something else".

Yeah thanks dad!
So, sorry we couldn't help really.
Cheers
Prue