Rail passengers on some of the country's busiest routes will suffer disruption for five days from Tuesday because of a prolonged strike in the bitter dispute over guards on trains.
Members of the RMT union on South Western Railway will mount picket lines outside stations, including London Waterloo, the busiest in the country.
The union is also planning a series of 24-hour strikes on Saturdays in November, which will hit tens of thousands of rugby fans travelling to and from Twickenham, where England are playing international games.
Almost a third of services will be cancelled between Tuesday and Friday, while half are expected to operate on Saturday.
SWR is yet to publish its plans for Saturdays in November, saying it will be liaising with Twickenham stadium and the RFU.
RMT general secretary Mick Cash said: