Mike Pryce on Twitter: "@teaselstudio1 @c_mperman 1154 had issues with stability - pitch up caused by PCB fountain. Later work around P1216 dealt with such things. PCB Harrier looked at in 66/67 -
The Hawker Siddeley P.1154: Britain's cancelled supersonic jump-jet | Hush-Kit
Hawker P1154 Fleet Air Arms by darthpandanl on DeviantArt