joker97: there are 2 issues here
1) unfortunately you were in the wrong legally as the cyclist was going straight hence had the right of way. however if the cyclist was in fact speeding past and overtaking the van on the left and knew you were coming, you could say in terms of common sense he was wrong.
2) every one of us would probably have made the turn given the circumstance. I guess defensive driving principles would say do not go if you can't see what's coming behind the van - you did not have line of sight, better safe and sorry. but yes, in the heat of the moment, most of us would have made the turn, including some of those who claim they wouldn't have.
lesson learnt.
Thanks for that.
I should just be glad it wasn't serious for the biker.