The Chipmunk and Bulldog in military service were both equipped with wing root leading edge 'toblerones' (triangular strips) which induced buffet over the tailplane and elevators as AoA increased - pulling to the 'buffet nibble' would mean that you were at the max turning performance. The toblerones gave excellent natural AoA perception.
The last Bulldog I flew had unfortunately been fitted with a stall warning horn, presumably as part of its civilianisation conversion. It was as useless as most others of the type (e.g. as fitted to the PA28) and would sound well before the stalling AoA was reached - it ruined the aircraft for any spirited flying.