Well, actually, I don't know so much, but I'll try.
I found this. It was developed by team under leadership of Alec Issigonis in 1956-57 and that it was a 1.5 liter RWD saloon car, later it was renamed to XC9001, it was a FWD version of XC9000 and 9001 got restyled by Pininfarina. In 1960, it was renamed XC9005 and got 1.8 liter engine. XC9005 evolved into a ADO17 family of cars (also known as "Landcrab") and was launched in production in 1964 as Austin, Morris and Wolseley.