An appropriate, prompt and proportianate action by the bus driver. From the cyclist, the request (see article) for the second driver to get the plate rather than render first aid was a good response after such an incident.
To answer the OP's question: Yes, it could have happened here or in any of many countries. It didn't, but it could. I'm not sure that location is significant.
An interesting point to me is the legislation (mentioned in the article) requiring drivers to give cyclists four feet of room when passing them. I don't get massively upset by most close passes, but something like that wouldn't hurt in the UK.
As a UK cyclist and motorist for many decades and as someone who has had much reason to be grateful to our emergency services, I am amused by some of the glum responses to this thread.
We are not just road fodder Simba. That is approaching Marvin the Android in terms of absolutely failing to see that the glass is four-fifths full.
As to the grumbling from other contributors about the British Police... I must be a very lucky man. I've only ever known them to be prompt, courteous, professional, thoughtful and (when necessary) really rather brave.
A fabulous story about the bus driver in the OP.