The collision of two new tube trains on the District Line happened between East Putney and Southfields stations on 1 May.
It is thought to have been caused by the track moving and caused minor damage to carriages.
More top news
Liverpool Street and Stratford stations quickly became overcrowded this evening after a person was hit by a train.
Newly re-elected Labour leader Jeremy Corbyn describes his relationship with Mr Khan as "fine", even though they haven't spoken recently.
The kittens were in a poor condition when they were rescued, but are now putting on weight and will soon be ready for new homes.