The only thing that 1957 had to do with the Bucc was that it wasn't cancelled. As regards the TSR2, thanks to 1957 it was the only game in town as far as the RAF was concerned, hence the gold plated Spec, which eventually killed it. 1957 was a cost cutting exercise, Sandys had been told to save as much money as he could, hence he planned to get rid of most of the manned aircraft, because the he knew that the primary threat to the UK was not the Soviet Bomber, but the Soviet IRBM and Bomber launched long range ASM, the only counter being a nuclear tipped ABM/SAM. Though of course, He also canned the ‘Blue Envoy’ (Super-Bloodhound) around the same time.