The Docklands Light Railway (DLR) will be out of action this weekend for signal software testing across the network.
Replacement buses will operate on routes from Canary Wharf to Stratford, Beckton and North Woolwich and Stratford to Beckton on Saturday and Sunday.
The Woolwich Ferry will also be suspended.
DLR director Jonathan Fox said: “It’s essential that the weekend’s testing of the signalling system software takes place simultaneously across the entire network to replicate as closely as possible normal operational conditions.”
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