Vintage BIBA evening dress UK14

Gorgeous simple shift party dress from Biba. It's approx knee length and so simple to slip on with no fastenings. It's a UK14 that measures 37" in length and 38" around the bust. It's a sheeny shiny almost satin fabric made from 100% viscose. It's lined and  in fair condition. It has some very slight nubbling under the arms (see photo) and some of the beads have become unthreaded - nothing significant but is a slight imperfection which in the long run would need attention. 
Please feel free to ask questions and happy shopping!