Well, as an ex USAF ATC from the Upper Heyford RASZ (does anyone remember that?) I know what "avoiding action" is. (for my US colleagues "avoiding action" is a UK ATC turn that means turn NOW, and FAST!!!)
I was flying a VP registered 727 into Stansted a few years back and was around 3,000' AGL, IMC, when the call came: "VP-XXX pop up traffic 12 o'clock less than one mile AVOIDING ACTION turn right heading XXX"
You can believe I now know why we do steep turns in the sim every six months.
Never before had I ever banked more than 30 degrees in an airliner (intentionally, that is) and never expected to.
By if a UK controller ever gives me "avoiding action" again, I will do it immediately.
My bank was more than 45 but less than 50 degrees, and because it was done with superior skill and pure adrenilin, the boss never noticed.
At least that's my story...