More what ifs…

If BEA hadn’t insisted on DH redesigning the Trident, the Medway would probably have been approaching production status at around the time the FAW.2 was being developed. The most powerful dry Spey hadn’t got much more grunt than the 11,250 lbs of the Avon 208s used in the FAW.2. The Medway was supposed to start at approaching 14,000 lbs.

Thats a good point about the Spey power, they must have been looking to get more performance with area ruling, and a small wing change but nothing significant so I think like the thin wing Javelin only just supersonic.

However the extra fuel capacity of the Mk2 and the more economical spey would have extended its range considerable over the the Mk1. Plus advantage of sharing the engine with the Buc S2.