I suppose one point would be that it was not as revolutionary as is often claimed, the Vigilante appears to have met a spec. similair perhaps even more demanding.
Because we know that planes like the Vulcan, with mission systems not that much more complex than the Lancaster, were in service for years; its tempting to think the TSR2 would have stayed in service as long. But such aircraft were laughingly long in the tooth by the time they were retired, and only ran on as long as they did because of delays to their replacements.
Modern projects, like the MRA4 and Typhoon are immensly more complex than the beautiful jets of the fifties. TSR2 would have been the first of that generation. Could Britain have made it going alone? ask the guys waiting for the MR4 Nimrod, its largely British - aside from the Boeing built mission kit.
Its sometimes stated that the TSR2 was quashed because of American pressure, has anyone ever seen anything in public record? Its been 40 years now.
Perhaps the workers at Vickers and the like deserved better, but the workers at Ford and what became British Leyland did war work too, almost every manufacturing company in wartime Britain did war work, maybe Wilson and Callaghan rembered that when they put a bit of that government money- that normally keeps the defence industry going - their way.