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.
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Donald Trump is to visit the UK on July 13 and hold bilateral talks with Theresa May, Britain's ambassador to the US has said.
The Football Association has announced it has received an offer to buy Wembley Stadium.
The most hotly-tipped date is July 13, following the Nato summit which the president is due to attend in Brussels on the previous days.