“We're disappointed that the railway workers’ trade union, RMT, has called industrial action on 21, 23 and 25 June.
“We're now working hard to understand what level of service we can run on these days and we will advise you as soon as possible.
“We expect significant disruption across our network. Most of our stations and routes will be closed and we will only be able to run a severely reduced service, so we strongly recommend you plan ahead, do not travel on these dates and make alternative plans. Most customers will be unable to travel and replacement buses or taxis will not be available.
“We want to make sure you’re fully refunded for not being able to travel. Information on how to claim fee-free refunds is available on our website (southeasternrailway.co.uk/industrial-action).
“We’re very sorry for the inconvenience and frustration this industrial action will cause.”