This is the Pipewood Outward Bound School that some of us from MGB went to for a month. Did you go?
It was at Blithbury near Rugely and I think it was an old POW camp. There were girls in separate dormitories. It was a great escape. Mr Allcock was a teacher there when I was there, before he joined MGB. He was great at Pipewood, but he soon changed once at MGB!