Here we see a happy bunch of Chatham House Prefects from 1965:
Back row: K. Smith, K. Flower, M. White, J. Bowley, P. G. Everest, I. Smith, D. Mankellow.
Front row: D. Lunn, B. Allfrey, A. Taylor, WPP, N. Holladay. R. Cull, B. Holton.
With thanks to Adrian Taylor.