First Great Western say the problems started at 4pm. South West Trains were also hit but say the issue is now resolved. Staff are being asked to allow passengers onto trains where guards can be paid cash or by card. The mobile credit card machines used by trains have not been affected.
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People across the South remembered the those who lost their lives during the silence at midday across Britain.
Friday afternoon's forecast for the west of the region
Friday afternoon's forecast for the east of the region