There was a mid-air over the Wash/North Norfolk about 1968. Canberra out of Holbeach hit a Victor out of Marham, I thinK.
Weather was 100% dog sh1t and ATC radar was totally maxed out with weather. I was the Duty Controller at Waddo, which meant that I was in my pit listening to the Light programme and a colleague, as duty ops officer was in Ops.
BBC reported reports of a huge explosiong over north Norfolk and speculated that an aircraft had crashed. I called ops but none of our aircraft were supposed to be in the vicinity. Plenty of hole borers but none due to be near East Anglia.
I rang Group who quickly confirmed with the other 1Gp stations. AOK then they checked with 3Gp and the bad news began.