I think there are a whole host of reasons why TSR2 was eventually cancelled. The RAF specification was over-complex, for instance it called for the aircraft to be able to operate from semi-prepared strips - why? It would have been a much less complex design if the requirement had followed on with the V-Force policy of operating from a variety of dispersed airfields with a 6000ft runways and some basic support facilities. As BEagle explained earlier, the over-promoted oaf of a CDS Mountbottom worked tirelessly behind the scenes to run down the TSR2 and promote the RN Buccaneer instead - hardly a ringing endorsement. There were also many high-level RAF officers who had their doubts and this view can only have gradually trickled down within the MOD. It would have been a great plane, a vast improvement on the Buccaneer, but it lacked both the necessary amount of high-level political and military support and, when money is tight, that will eventually prove fatal.
www.spyflight.co.uk/tsr2.htm
Heimdall