Police have appealed for the 15 power station protestors to come down and stop wasting public money in an operation estimated to cost £20,000 per day.
Nottinghamshire's Assistant Chief Constable Paul Broadbent said they have made their point and there are other ways of protesting.
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Showers are likely to break out which could turn heavy during the afternoon.
Police have made two more arrests in connection with an assault on a Watford fan after they played Wolves last month.
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