This Trench Coat, as far as I know, was manufactured from the late 1970's
to early 1980's.
It does not have a "name" , to my knowledge, but you may recognize the
name of the designer, Etienne Aigner. I don't know if these trench coats
were sold in the U.K. It is most certainly a very classy looking trench
coat with lots of details, manufactured in Hong Kong and extremely well
made.