Hi Ron
Not found out much today except a picture of the builders model
But you probably already have this.
However I have sent an e mail to a friend who lives on Clydebank where his father used to work for John Brown Shipbuilders and asked him for some help. His father was working in the yard during the early 1950s so there is also a chance he actually worked on Britannia.
I will let you know how I get on.
Paul