Just a very quick update on the murder of Richard Whelan last week:
A 20-year-old man was apparently arrested in Walton-on-Thames today in connection with the stabbing.
There are no other details available as yet.
16:58: Bit of an update. The suspect is apparently being held at a station in east London, and police are still asking for witnesses, especially people who were on a second No 43 bus which was nearby.