Rail workers at five train companies are said to be solidly supporting strikes in the long-running dispute over the role of guards.
Members of the RMT union were walking out on Monday, Wednesday and Friday on South Western Railway, and on Monday on Southern.
SWR plans to run more than 70% of its normal weekday service of 1,700 trains, although there will be rail replacement buses and arrangements to have tickets accepted on other train companies
Greater Anglia said it planned to run a normal service, with no alterations
Southern, which was facing its 39th RMT strike on Monday, said it planned to run a normal service on most routes, but advised passengers to check for any last-minute changes before they travel
