Disruption on Southeastern between London Charing Cross and Ramsgate due to lineside fire between Pluckley and Ashford International.
Trains are currently unable to run between Tonbridge and Ashford International.
Replacement buses have been requested are should be in place at around 16:20.
There is no current estimate for when a normal service will resume
More top news
Gravitational waves - ripples in spacetime - have been detected by scientists a century after Albert Einstein predicted their existence.
Reading host Burnley in the Sky Bet Championship on Saturday
Brighton host struggling Bolton Wanderers at the Amex Stadium on Saturday.