Pistonvalve,I remember one in the jewellery quarter as late as 1974/75 used it quite often - remember the starched table cloths and waitresses in uniform.
I didn't know they were still around in the 70s.The last one I remember was Northfield c1951...
They were not around in the 1970s. I agree with Rowland (Post 39) Some of the restaurants might have been bought and run as private businesses but they were not subsidised British restaurants.
Chris. (Old Boy)