Does this decency among motorists (letting each other out of side roads out of the goodness of their hearts, and all) count for allowing right indicating busses out of stops too, btw?
You don't want to get stuck behind one of those bloody things....
Depends on the situation, if you're already in a position to move past and it would be dangerous to stop, or are already moving past, then you overtake. If the bus is indicating out of the stop as you approach then the law dictates you let it out.
Bus drivers that pull away whilst still indicating left, then force other drivers out of the lane are complete tools, so much so that I will not overtake a bus at a stop whilst on my bike anymore.