This is G-AOGS along with Turbi G-AOTK, snapped by me with my Brownie 127 around 1960.
The other Luton Flying Club Tiger was G-AOZH which is still around and comes to deHMC events (it's yellow mil now). G-AOGS was sold to the US in 1971 as N82TM.
Howard Brunt was the then CFI. The controller instructor then would have been Malcolm Lewis ('Lew'). Another controller who became an instructor and then went to fly for McAlpines (and later Monarch) is John Turner whom I still hear from occasionally.
G-ARUM was indeed the Coal Board Dove, pilot was Basil Allum. Nice bloke.