Mildmay line

The Mildmay line is the service operated by London Overground on the North London and West London railway lines. It passes through the inner suburbs of London, between Richmond and Clapham Junction in the south-west and Stratford in the east, avoiding central London. Prior to the name being adopted in November 2024,^[1] the service was labelled in Transport for London timetables as the Richmond and Clapham Junction to Stratford route.^[2]

The name was chosen to honour the Mildmay Mission Hospital, which treated victims of the HIV/AIDS crisis in the 1980s, and the line is blue on the Tube map.^[3]

The name proposed for this service in 2015 was the 'North London line'.^[4] In 2021, Sadiq Khan announced that if re-elected as Mayor of London, he would give the six services operated by London Overground unique names that would reflect London's diversity, working with his Commission for Diversity in the Public Realm.^[5] In July 2023, TfL announced that it would be giving each of the six London Overground services unique names by the end of 2024.^[6][7] In February 2024, it was confirmed that the service from Stratford on the North London and West London railway lines would be named the Mildmay line and would be coloured sky blue on the updated network map.^[3]

As of May 2025, the typical off-peak service pattern is:^[2]

In the official Mildmay line timetable, the passenger train service run by Southern between East Croydon and Watford Junction is indicated. This service shares infrastructure with Mildmay line trains between Clapham Junction and Shepherd's Bush stations, after which they join the West Coast Main Line en route to Watford Junction. This service operates at a frequency of one train per hour.