I was demobbed in April 1973. Still using standard shirt with separate collar and those dreadful collar studs. About 2 years before demob we were allowed to buy our own collar-attached shirt but it had to be of a particular colour & pattern.
I handed in my greatcoat when I was demobbed - it was issued to me in Boy's service in 1960 when I was 6ft 3ins and 11 stone; when I was demobbed I was the same height but had added a further 5 stones!