Avro 504,DH Fox Moth, DH Dragon,Short Empire flying boat, Supermarine Spitfire, DH Mosquito,EE Canberra, DH106 Comet, Vickers Viscount,Bristol Britannia, Fairey Delta 2, Fairey Rotodyne,Vickers Valiant,BAC-111,Blackburn Buccaneer Mk2, Hawker (Siddeley) Harrier, B-N Islander
(Collaboratively, Jaguar and Concorde)
Perhaps a blend of significance , importance, interesting engineering and national pride.