Hawker Siddeley P.1154
The Hawker Siddeley P.1154 was a planned supersonic vertical/short take-off and landing (V/STOL) fighter aircraft designed by Hawker Siddeley Aviation (HSA). Development originally started under P.1150, which was essentially a larger and faster version of the basic layout and technology being developed by the smaller subsonic Hawker Siddeley P.1127/Kestrel.