This picture from Howard Baker - TA19 in 1965/6?
(However, could this possibly be C52 Part 1?)
John Devine (Back row #2) is sure it is TA19 and he has added more names

No full list of names at the moment - apart from:

Back row from left to right: #2 John Devine (Bush House), #3 Dave McCarthy, #4 Les ??, #5 John Conway, #7 Howard Baker, #8 Phil Barwell (Bush House)

Middle row: #2 John Hillyard, #3 Mark Horsman, #4 Ken Banwell, #10 John Machin

Front row: #1 Dave Willoughby, #3 Douglas Fenna, #5 Bob Kerr (Glasgow), #8 John Knight (Bush House)