South Western Railway passengers face a weekend of changes as lines around New Malden are closed for maintenance work.
The closure will affect a wide range of services from London Waterloo on Saturday and Sunday (September 19 and 20).
Several services will not run.
Others will start from different stations or be diverted onto alternative routes.
Replacement buses will also operate between a number of stations.
Here is what passengers need to know before travelling.
Saturday (September 19):
The lines in the New Malden area will be closed throughout Saturday due to maintenance work.
London Waterloo to Weymouth services will be revised.
Some trains will call additionally at Woking, Clapham Junction and Basingstoke.
London Waterloo to Portsmouth via Guildford services will also be revised.
Some trains will start from Woking.
Services from London Waterloo to Portsmouth via Eastleigh will start from Basingstoke.
London Waterloo to Exeter St Davids services will be revised.
Salisbury stopping services will start from Basingstoke.
Alton services and Basingstoke stopping services will start from Woking.
London Waterloo to Reading and Windsor services will also be revised.
London Waterloo to Chessington South services will not run.
London Waterloo to Dorking and Guildford via Epsom services will start from Worcester Park.
Shepperton services will be revised and diverted between Clapham Junction and Kingston via Richmond.
The London Waterloo service via Wimbledon and Kingston will not run.
Hampton Court services, Guildford via Cobham services and Woking stopping services will start from Surbiton.
Replacement buses will run between Clapham Junction and Chessington South via Wimbledon.
Buses will run from Clapham Junction and Worcester Park via Wimbledon.
Buses will also run between Clapham Junction and Surbiton on several routes.
Sunday (September 20)
Further changes will affect SWR services on Sunday.
Weymouth services will be revised.
Morning and early afternoon Waterloo services to Poole and Portsmouth via Eastleigh will run throughout the day and call additionally at Farnborough.
These services will not divide at Eastleigh.
Afternoon and evening Waterloo to Portsmouth via Eastleigh services will not run.
A revised service will operate between Eastleigh and Portsmouth.
Portsmouth via Guildford services will be revised.
Some trains will start from Woking and some will call additionally at Worplesdon.
Exeter St Davids services will be revised.
Some trains will start from Basingstoke.
Alton and Basingstoke stopping services will start from Woking and run hourly.
Chessington South services will not run.
Dorking services will not run.
Guildford via Epsom services will start from Worcester Park.
Shepperton services will be revised and diverted between Clapham Junction and Kingston via Richmond.
The London Waterloo service via Wimbledon and Kingston will not run.
Afternoon and evening Kingston via Hounslow services will not run.
Hampton Court services will not run.
Guildford via Cobham services will start from Worcester Park and be diverted via Epsom.
Guildford via Woking stopping services will not run.
Replacement buses will run between Clapham Junction and Chessington South, Worcester Park, Surbiton, Hampton Court, Effingham Junction and Weybridge.
A bus will also run between Addlestone and Weybridge.
Passengers are advised to check their journey before travelling.
Passengers should allow extra time where replacement buses are required.
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