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Commuters are being warned to expect delays to their end of week journey home because of problems on Southeastern's high speed service.
Trains are delayed on services between Ashford International and St Pancras International with no trains stopping at Stratford International because of a signalling problem.
The problem near Stratford means trains will not be stopping there but Ebbsfleet station will still be served, National Rail Enquiries said.
Only Londonbound trains are being affected with delays anticipated until 8pm.
Passengers for Stratford International are advised to continue to St Pancras and catch the next train back towards Kent.
Tickets will be accepted on the London Underground and DLR from Stratford.
Passengers are advised to use the real-time Journey Planner to check their journey.