Originally Posted by
Heathrow Harry
All our recent combat aircraft have been co-operative - you have to go back 30-40 years to the Harrier and the Buc. for a 100% UK aircraft - (and a lot of the later Harriers had US input)
There was a lot of US involvement from the very early days of the Harrier/Kestrel/P.1127, so I would exclude that tbh.
Bucc is the last I would think?