S7 Damage
Details have now come out about a minor collision between two District Line trains last week.
It occurred near Putney Bridge between two of the new S7 trains running on the branch between Wimbledon and Edgware Road, and all new S Stock trains were immediately withdrawn, whilst an investigation took place.
It also led to the unusual occurrence of some C Stock trains not running to Wimbledon and being sent to Ealing Broadway and Richmond instead.
D Stock trains continued to run to Wimbledon as normal.
The story appears in the Evening Standard and on the BBC News website.