"What if" questions regarding TSR.2, Avro Arrow

I'm toying with a few alt history ideas regarding the late 1960s and
early 1970s...specifically UK and Commonwealth involvement in a
massive anti-guerilla/counterinsurgency campaign in North America.
Given that, if the TSR.2 and the Avro Arrow had been built and entered
series production, what kind of role might they play in such a
campaign? Both were designed with the Big, Bad Sovs in mind, either
rolling across the Fulda Gap or lumbering over the Arctic. But like
the F-105 or F-111, could these aircraft that almost were have found a
new role during times of less-than-conventional crisis? Any insight
or opinion would be welcome.