There are delays of 30 minutes on First Great Western trains between Taunton and Bristol Temple Meads due to an earlier signalling problem at Taunton.
It's also causing 30 minute delays between Bristol Temple Meads and Exeter St Davids.
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Bristol Mayor George Ferguson has been accused of a "nasty personal attack" in a row over how the city's Green Capital cash was spent.
Bristol Mayor George Ferguson says there will be "further breakdown" of how the city's Green Capital cash was spent.