It is a bit difficult to say what each aircraft will do. Several US machines had no stall protection on home ground but had pushers fitted to operate on the UK register. It was said that the BAC 1-11 had the deep stall designed out of it after the prototype was lost early in testing, but it had stick pusher. Fokker test pilots said the F-28 would not deep stall.
Re the Trident ex Heathrow; it actually recovered three times from the stall induced when the leading edge droop was retracted much below proper speed. The deep stall occurred when the stick pusher was incorrectly dumped.