There is major disruption this morning for South West trains heading to Waterloo with more than 80 cancellations so far.  

Trains from Chesington South, Dorking and Hampton Court are all affected by cancellations due to "urgent repairs" to railway lines at London Waterloo. 

A track defect over a set of points has blocked platforms 1-4. This is causing major disruption to trains in and out of London Waterloo.

Train services running across the whole South West Trains network will be cancelled, delayed by up to 30 minutes or revised.

The disruption is expected to last until 3:00pm today. 

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