Probably 3a 1955
(originally posted as 1953)
Thanks to Andy for this sourcing photo.
Jim Sams has emailed to say he's pretty sure it is 3a 1955 and he supplies these names :
B. KIDGER, M.BROWN, _ STOKOE, A WEST, J. CHAPMAN, D. CASH, G.WILSON, _ BROWN
W. BERRY, D. CHISHUM, R. SHORT, B. OGDEN, R. WATSON, R. BELL, J. COLTMAN, D. ARMSTRONG, THOMKINS, DUNCAN
R. GREAVES, J. THOMPSON, P. HARRISON, P. FRASER, K. MILLER, Teacher 'DADDY O', R. DUNCAN, V.TATE, _ BATEMAN, _ McGARRY, M. HARDING
-, please email the site editor