Police were called to Hinkley Point this morning to deal with a small number of people stopping traffic entering the site and leading to queues on the approach road.
They arrested four people for wilfully obstructing the highway.
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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.