Ok, anorak on, thermos flask full...........
K9953 was indeed flown by A.G. 'Sailor' Malan. 74 Sq 1940.
It first flew 28/4/39. And from what I can find, ended it's life in a O.T.U. 1943 when it collided in mid air with R6883.
Anorak off, Thermos empty.