This is the problem right there^^^^
benb, you were not there (I guess by some considerable distance?). I was not there (although a little closer and with some knowledge of the roads we are commenting on). The rest of us were not there, except for the OP. Even the Op does not appear rto have seen the bus approaching other than in his peripheral vision, so how can any of us comment on what the bus driver may or may not have done. We did not see his lights and we do not have a clue about the chain of events leading up to the incident. For all we know a little old lady could have stood up and started walking down the aisle of the bus making it a danger for the driver to perform an emergency stop when there was no need to do so. This too is pure speculation, just like a lot of the other comments made in the thread so far. I think the only things we can agree on from viewing the footage is that the bus was moving quite quickly (I think it might be a 40 limit there but not sure), the cyclist clearly was not looking so did not expect the bus to be there and she was incredibly lucky to avoid serious injury. Anything else is irrelivant and talk of walking in to police stations bleating about the big bad bus drivers antics are uncalled for and unfair.
As I said early on in this thread, there will be arguements in favour of both views. What I meant was that clearly being the group of amatuer Poirot's and interweb superslueths that we are we will all be keen to broadcast our views to as wide an audience as possible in the belief that we are 'right'. I am not particularly excluding myself from this description