Delays of up to 25 minutes on Southern trains between Victoria and Horsham due to signalling problem at Dorking.
Tickets being accepted on First Great Western, South West Trains, local bus services.
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Thanet South is a traditionally conservative seat - in 2010 they won by 7,617 votes.
A woman from Gillingham in Kent has been jailed for 16 years for setting a honeytrap for a gambler kicked to death for his winnings.
Tuesday afternoon's forecast for the east of the region