Madcat11, You probably have this info but anyway;
Taken fromFLYING TRAINING AND SUPPORT UNITS since 1912 by Ray Sturtivant I.S.O., with John Hamlin.
No.1611 (Anti-Aircraft Co-operation) Flight.
Formed 1.11.42 ex K Flight No.1 AACU in No.70 Group at Langham to co-operate with No.5 HAAPC Weybourne;
9.11.41 Bircham Newton ;
Disbanded into No.695 squadron 1.12.43.
Aircraft: Henley (L3420), Tiger Moth 11 (N66540), Oxford (L4549).
Code Unknown.
Aaron.