Rail users in Berkshire are being reminded of possible disruptions to train services next week.
South Western Railway has said that industrial action between Monday, August 7, and Saturday, August 12, will mean a reduced timetable will be in operation.
An overtime ban by the ASLEF union means travellers are being urged to check before travelling, and that journey planning apps and websites have already been updated.
Three large events will take place on the network with the Boomtown festival in Winchester, and both the England v Wales Summer Series rugby fixture at Twickenham and the Dubai Duty Free Shergar Cup event at Ascot racecourse.
Anyone heading to these events are advised to travel early, with services expected to be very busy.
A limited number of additional services will operate following the England v Wales match at Twickenham, however customers are advised that long queues are expected.
Stuart Meek, South Western Railway’s chief operating officer, said: “Customers should check before they travel next week as another overtime ban by the ASLEF union will unfortunately mean another reduced timetable.
“We have worked hard to provide additional services for the England v Wales rugby fixture at Twickenham on Saturday, however, customers should be mindful that a queuing system will be in place at Twickenham station for their return journeys and that we do expect long queues.
“We are sorry for the disruption that our customers continue to face and thank them for their patience.”