Yep. When I'm riding in an area with buses (which is a substantial part of London, one way or another) if the bus pulls in and I can safely pass then I'll pass. On the outside (the right in the UK). Passing a bus on the inside is asking for trouble.

If the bus has been there for a while I'll scan the pavement to see if there are a lot of people waiting to board or a steady stream of people getting off. If so, I'll pass if it's safe. If not I may or may not pass, but if I do I'll be watching for the indicators to flash to say the bus is pulling away and ready to either brake hard or gun it, depending on where I am relative to the bus if it does start to move.