There is set to be widespread disruption on the Tube and Overground network this weekend.
A 48-hour Tube strike by the RMT union is set to start from 9pm on Saturday (February 6).
Services will be disrupted from early evening on Saturday and all day on Sunday and Monday.
Trains will be running, but Transport for London (TfL) said many stations may open late, close early, or may not open at all.
On Sunday until 10am there will be no service between Liverpool Street and Chingford due track improvement works.
A replacement bus will operate on the route.
There will also be a no trains serving Walthamstow, Leyton and Leytonstone, on the Gospel Oak to Barking route until 12pm on Sunday.
This is due to preparing the line for electrification.
Replacement bus services will operate from Walthamstow Queen’s Road, Blackhorse Road, Leytonstone High Road, and Leyton Midland Road.
TfL is advising people to check its website before they travel.
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