"It is widely known that Canada cancelled its Avro Arrow due to US pressure".
Eisenhower's veiled threats to the Canadian Prime Minister, Diefenbaker ensured the cancellation of the CF-105.
"Can't comment on all the projects you mention but I can assure you that TSR2's demise had absolutely nothing to do with the US".
Well the cancellation of the HS.P1154 and the HS.681 certainly benefitted the American aircraft industry, and the RAF failed to get a "better deal" by first ordering the F-111 and then cancelling the order.
60 P.1127(RAF), later the Harrier and ex. RN and new build Buccaneer were also ordered, so HSA did well out of the "shambles" of aircraft procurement for the RAF during the mid/late sixties.
There may be no evidence of US involvement in the cancellation of the TSR.2, but it took 50 years for the real reason for the cancellation of the CF-105 to become public knowledge.
Ciarain.