on the line between Olympia and West Ham on 2 September 2013. On 6 February 2014, the S7 Stock started running between Wimbledon and Edgware Road. The S7 Stock started services to Ealing Broadway on 13 June 2014, and on 17 June saw the start of commercial service to Richmond. On 16 January 2015, the S7 Stock began running to Upminster. Withdrawal of the D78 Stock began on 19 January. In November 2016, the last of 192 trains were completed by Bombardier and handed over to London Underground. The D78 Stock was completely replaced by the S7 with the withdrawal of the final unit from service on 21 April 2017. Accidents and incidents On 21 June 2020, a Metropolitan line service formed of eight carriages, alias S8 Stock was involved in an incident at . Another train formed of two British Rail Class 165 diesel multiple units overran a signal at danger and the trains were in danger of a head-on collision. The two trains stopped apart. List of cars Each car has a five-digit number: the second digit identifies the type of car, the last three digits the set number (001–116, 301–568). A-end cars have odd numbers; D-end even numbers. 25nnn cars replace 23nnn cars on trains equipped with de-icing equipment. See also Victoria line 2009 Tube Stock, also part of Bombardier's Movia family London Overground Class 378 New Tube for London References External links S Stock data sheet Article about the new S7 trains entering service onto the Hammersmith and City Line S Bombardier Transportation multiple units Train-related introductions in 2010 750 V DC multiple units