As Chopper2004 says, the French have several Armee de l'air Fennecs with machine guns and door sniper based in various locations specifically for intercepting GA types. My Aeroclub was invited to a familiarization day with the guys based in Bordeaux/Cazeaux a couple of years ago, and they often play in our local area. Aeroclub PPLs have on occasion been asked if we would mind being intercepted when out on a local jolly and once they are on your wingtip, have even been asked if we would mind manouvering away to try to outrun them etc.
Its all very well saying that a FJ can "burn" a light chopper or spam can, but how does the RAF go about intercepting someone in a PA28 flying at 100kts for a visual ID? What is the minimum speed you can manouver at in an F3 or EF to go alongside someone so the PPL doesnt **** themselves as you wizz past? Or would you use something like a Tucano? Does the RAF train for this even?
Regards, SD..