CharlesPottins writes
Surprised to learn there are still rules, I thought deregulation had
taken effect.

1. Deregulation never happened in London.
2. That's not what deregulation was about anyway.

Deregulation was about allowing 'open-access' competition. If you had a
bus or buses; you could effectively run it/them on any route, at any
time, charging whatever fare you wished. There are still rules about
having to register services and meeting all the safety requirements,
etc.

--
Dave