Commuters already set back by the tube strike are waking up to discover overground trains might not be running either.

South West Trains has reported a major signalling problem in the Norbiton area meaning commuters can expect major disruption to their journeys this morning.

Cancellations can be expected on trains between Norbiton and Strawberry Hill until 10am. 

Trains between Wimbledon and Twickenham via Kingston are also expected to be delayed or cancelled until 10am. 

Trains running through Wimbledon and Twickenham this morning are expected to be extremely busy due to the tube strike. 

To plan your journey, visit journeycheck.southwesttrains.co.uk.