and, yes, if a cyclist is whizzing along, and, as a result of that whizzery a pedestrian is injured, or suffers injury that is greater by virtue of the whizzingness, then the cyclist must be asked to justify the speed. There are plenty of streets in London where it is unreasonable to travel at Dellzeqq speed (let alone Coruskate speed!) and where we both moderate our speed accordingly - but there are cyclists, I'm afraid, who travel as fast as they can pedal in all circumstances.
To take as an example. Oxford Street has kerbs at the edge of the footpaths, but any fule kno that pedestrians step off those kerbs pretty much as and when they feel like it. If you ride down Oxford Street during the daytime at 20mph and hit a pedestrian, then you've got some serious explaining to do, because you could have reasonably foreseen that the pedestrian might have been in the carriageway.
To take as an example. Oxford Street has kerbs at the edge of the footpaths, but any fule kno that pedestrians step off those kerbs pretty much as and when they feel like it. If you ride down Oxford Street during the daytime at 20mph and hit a pedestrian, then you've got some serious explaining to do, because you could have reasonably foreseen that the pedestrian might have been in the carriageway.