Undertaking / filtering on left?

I think it depends where you ride. Coming in from Ealing I get more trouble from cars (like the fuckhead who pulled out from the other side of the road straight into me this morning less than 4min into my ride) and then peds. Cyclists cause me less grief but are still often doing silly stuff. Motorcycles aren't perfect but are probably the least problematic road user. I still say slow the fuck down when you're in the bus lane though. The number of times I've been saved by a headcheck as some fucktard barrels along at 60mph because it's a 'clear run' for him.. I need to move around other cyclists and potholes mr moto gp.

I agree - even when i am on my motorbike i filter fairly slowly, especially in Bus lanes as i dont think most motorists check their left mirror as much as their right.