The car on Liscard Rd looks to me like a Vauxhall Victor F or FA. Made between 1957 and 1961, the 'Super' had a top speed of 74.4 mph and 0-60 was 28.1 secs. the rust was pretty quick, too.
It might have been a big car for the time, being 167" long and 63" wide, but the current Astra is 7" longer and 8" wider.
Attached is a picture of an FA Victor. The black car behind it is a Humber Super Snipe.
I think you are quite right Norton. Well done and thanks. Rust buckets indeed. I'm amazed that the one in your picture has survived. The owner must keep it in a plastic bag under high vacuum and 0% RH !!
It was taken at the Ellesmere Port Boat Museum in the summer of 1987. The car had been fully restored and would have been about 25 years old at the time, but that was 27 years ago!! Hopefully, with the right treatments at the time and the correct maintenance in between, the car should still be on the road now.