If it was a Javelin, surely a Firestreak? I thought only Lightnings and Sea Vixens carried the Red Top?
There was the famous case of a Canberra (I think) which managed to put a practice bomb into the lavatory of some pub near Wainfleet, wasn't there?
But I once flew with an aged old navigator who'd been on Lincolns - they'd made some huge cock-up and bombed some wildlife reserve in Tchermany instead of the range, resulting in several million ducks becoming somewhat Cat 5! Qvestions ver asked in sehr high places!
I was also told that a B36 mistook the (then) roundabout at Norman Cross on the A1 for the lights of some range and manged to drop some practice bombs across it - don't know whether that was true or not!