Commuters in the Thames Valley have been warned they will have to deal with disruption for several hours during the morning rush after a signalling problem on a busy railway line into London.
Passengers could be delayed by up to an hour as a result of a problem between Wimbledon and Earlsfield which sparked cancellations on services into and out of Waterloo.
The signalling problem between Wimbledon and Earlsfield has now been resolved and trains are now able to run to and from London Waterloo via Wimbledon.
However, we expect there will be knock-on disruption for several hours. Delays of up to 60 minutes to journeys are expected until services fully return to normal.
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Analysis of queues found drivers faced 1.35 million traffic jams, costing them in wasted time, fuel and unnecessary carbon emissions.
Wednesday's forecast for the west of the region from Holly.
Holly has the forecast for the east of the region.