Your 4th photo, Draycott Avenue SW3 is where I used to work in 1975. My immediate boss had a 1972 Elan +2 which he occasionally lent to me, and his boss has a 1971 Ferrari Dayton Spyder which he sold for £15,000.
I first recall seeing an S2 in 1970. I cannot recall seeing any Europa of any description before 1970.
Happy memories.