Photograph kindly supplied by Will Heard who is shown on the top row, 5th from left,
Other names he has identified are David Pettinger (top row, first on left). Possibly Claire Wardle (2nd row down, 4th from left).
Rosamund Briggs (2nd row down, 2nd from right) and Stephen Hall (bottom row 8th from left)

Any names or other information would be very welcome