A third strike within a week and a power failure south of the capital has led to major problems for South Western Rail passengers.
Members of the RMT Union walked out at midnight in their series of summer strikes in the row over the role of train guards.
This evening the Union has confirmed that talks will take place with the operator, after hundreds of trains were cancelled or delayed.
South Western Railway has thanked customers for patience, saying: "The proposal we have offered would see a guard rostered on all our services, including our new trains to be introduced from later next year. We will do everything we can to make journeys as smooth as possible during today's strike."
A spokesperson for the Department for Transport urged the RMT to stop pushing its members into taking action, saying: "This pointless action by the RMT is not about jobs or safety. The independent rail regulator has ruled that driver-controlled trains, which have been used in this country for thirty years, are safe. Staff have also had jobs and pay guaranteed for the length of the franchise which runs until 2024."