The closure of the Central Line’s Hainault Loop will begin today, restricting services between Grange Hill and Newbury Park.
The line will be closed between these stations on weekdays and between Woodford and Leytonstone, via Hainault, at weekends until November 4.
Improvements are set take place to improve reliability and create a smoother journey for passengers.
The 12-day closure is part of a programme of renewal works on the line, which was last upgraded in the 1990s, with new trains and signalling, allowing automatic train operation.
Central line services will continue to operate between Epping and central London as normal.
Tickets will be accepted on local buses and Network Rail services between Ilford and Stratford, and high frequency rail replacements buses will also be running.
To find out more visit www.tfl.gov.uk or pick up a leaflet at stations.
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