A series of planned closures will affect London Underground and Overground services from Monday, March 23 to Sunday, March 29, with most engineering works taking place over the weekend.
Passengers are being advised to check before they travel and allow extra time for their journeys.
Multiple lines will be affected by the closures.
Metropolitan line
On Saturday, March 28 and Sunday, March 29, there will be no service between Aldgate and Wembley Park.
DLR
On Saturday, March 28 and Sunday, March 29, there will be no service between Bank and Tower Gateway to Canning Town and Lewisham, and between Canary Wharf and Stratford.
Elizabeth line
On Saturday, March 28 and Sunday, March 29, there will be no service between Liverpool Street (National Rail platforms) and Stratford to Shenfield.
On Sunday, March 29, there will be no service between Paddington and Ealing Broadway until 07:45, with a reduced service at Burnham.
Liberty line
On Saturday, March 28 and Sunday, March 29, there will be no service between Romford and Upminster.
Mildmay line
On Sunday, March 29, there will be no service between Willesden Junction and Richmond.
Weaver line
On Saturday, March 28 and Sunday, March 29, there will be no service between Liverpool Street and Enfield Town, Cheshunt and Chingford.
Windrush line
From Monday, March 23 to Thursday, March 26, there will be no service between Sydenham and West Croydon after 22:15.
On Sunday, March 29, there will be no service between Highbury & Islington and Clapham Junction, Crystal Palace, New Cross and West Croydon after 19:15.