Al,
A little more which may or may not be of interest
1484 (Target Towing + Gunnery) Flight. Formed 30/10/41 at Driffield from 4 Group TT Flight as 1484 (TT) Flt; redesignated as 1484 (TT+G) Flt 01/42, redesignated 1484 (Bomber) Gunnery Flight 18/12/42. DB 15/2/44 to become 1689 Bomber (Defence) Trg Flight.
Types in use Fairey Battle; Defiant; Lysander; Tiger Moth; Anson; Oxford; Whitley; Martinet and Hurricane IIC.
Thought the dates/types might help give some insight. I'm glad to say that I had to look all of this up!