HS748 - good design in fair competition with F27 Friendship.
ATP - Should have been a natural successor; but was a dog that suffered far too many undercarriage collapses. The rot set in on a tarnished reputation.
HS146 - It is a puzzle as the why this was not a world leader 'City hopper': Were four engines too thirsty, or was the dumpy unconventional design just not pretty enough.
Fokker and Hawker Siddely had this market ringfenced between them and both blew it initially to Canadair and latterly Embraer who I suspect have reaped the benefit of the BAe demise. The BAe fleet of ATP & HS146 shows ignorance of consistent corporate 'branding' and perhaps a little arrogance in asuming that third world upstarts would not be serious competitors. A lesson that the Boeing Clan (inc McDonnell Douglas) learned from Airbus/Sud Aviation but managed.