I remember being intercepted through prior arrangement over the Irish Sea by a Tornado. It was a “jolly” for all the pax so there was a 3rd pilot on the
JS doing PAs - he counted down and at zero they went full afterburner which was enjoyed by all as it was a night flight.
These days I think the H&S risk assessment would say “no” before you asked the question. If you’d really like to see some military aircraft up close, don’t reply to radio calls for 10mins over Europe...