The UK has a lot of previous form in that department - the TSR-2 (cancelled in favour of the F-111) and the Miles M.52 (blueprints given to the US and formed th

The UK has a lot of previous form in that department - the TSR-2 (cancelled in favour of the F-111) and the Miles M.52 (blueprints given to the US and formed the basis of the Bell X-1 design) to name but two: https://en.wikipedia.org/wiki/BAC_TSR-2 https://en.wikipedia.org/wiki/BAC_TSR-2 https://en.wikipedia.org/wiki/Miles_M.52 https://en.wikipedia.org/wiki/Miles_M.52