Co-incidentally, a couple of Typhoons laid a boom across the country last friday (8th) from Coningsby to intercept an aircraft near Cardiff.
Despite that they didn't do very well considering the Challenger had flown the entire width of the country out of radio comms on the wrong frequency! It was heading to Dublin and was intercepted near Shrewsbury.
Might have to change their tactics if / when supersonic bizjets enter service... tailchases won't be so easy then.
Question: if an SSBJ could operate above controlled airspace ( say, FL700 ) would it still be subject to a ban on supersonic flight over populated areas?