It seems that my car was sold in the late 1960's through a dealer called Barnet Motor Company.. I think on the road between Barnet and Borehamwood (Barnet Road?). Does anyone know what the address of the showroom was, any other info or any snaps of the place? Thanks in advance

I think this might have been the dealer that became John Britten Garages, who were at Barnet Road, Arkley, Barnet, Herts.?

Aha.. this confirms another tip I got .. but I am also informed that it is empty now shut down now ....

Not suprised, it was nearly 50 years ago. I think they mainly sold Morgans, Sprites? They used to sell a GRP conversion for rusty Sprites/Midgets called the Arkley SS. Sold a few s/h Sevens too.

Yeah I suppose so..
Had this nostalgic idea of parking up outside the place... hey ho

Did it end up being the TVR centre for a few years, then also shut down..?

Yep.. BMC. Then Arkley SS, Then TVR.
Now, derelict.
Drove past before I brought the car home earlier this month.