Re: Bus vs. meat bag
Highway Code Rule 223
Buses, coaches and trams. Give priority to these vehicles when you can do so safely, especially when they signal to pull away from stops. Look out for people getting off a bus or tram and crossing the road.
The reason buses assume they have right of way is that they do. Other road users should always give priority (i.e. cede right-of-way) to buses coaches and trams. People really shouldn't be driving without knowing this!