Dicky Ticker

I must hold my hands up and admit to nearly having a ding with a bike while in the cage last night.
Roundabout in the dark,car coming from the right but with plenty of time for me to go across in front of him,the guy on the bike came round in knee down mode and overtook/undertook the car on the inside.I did not see him till the very last minute
It is not a dual laned roundabout and as a biker I am aware of bikes but this geezer appeared from nowhere going like a bat out of hell
Had we collided,due to the position of the vehicles it would have looked like I pulled out infront of him,but he wasn't there when I pulled out.