In a Warrior,while getting an information service from Rochester ( Kent UK) I was south abeam in Cavok, circa 2 thousand feet, when I saw coming towards me in a curving arc from my 10 0'clock what I thought was a Marchetti as it had wing tip tanks.
I pushed the nose hard down, the ATPL next me looked up from his map as we both hit the roof. 'What the f+++ are you doing!'
It took me a few seconds to compose myself and reply about what about what had happened. The Marchetti vanished over the top of us.
Got on the radio to Rochester and they had no info on the aircraft in the area.
I now never trust an information service, if no one bothers to call in , then there seems little point.