Boy, I am impressed Oztrich Boy!
So we have a consensus on 1956 because of the Hillman Husky, curved windshield?
Man, that is only 5 years before I was born. I am feeling old...
Yeah, I used to have a 53 MkII (top photo) 4 dr in that colour - I think it was called British Non-Racing Green (top speed 52-55mph - not the ideal car for Australian roads)
From the comments;
This was the Britain all those Tommies died for, not the black and brown multiracial monstrousity that Labour created. Assholes.