This happens far too often.
Just the other morning a BAW flew over france and up UB11 to KATHY with no contact.
Now, I don't know whether it was an equipment problem or what. If it was equipment, why the hell did the pilots not squawk 7600?
The 2 Tornadoes that were scrambled were at BKY when said aircraft appeared on freq. If you were one of the said aircrew - have you realised you were minutes from interception?
Must have been costly - wonder if BA will have to foot the bill?
Nevertheless it must have livened up the day of the military aircrew.