Voters are going to the polls amid heightened security in what the National Police Chiefs Council says are "unprecedented times".

Election planners and police reviewed security plans after both the Manchester terror attack two weeks ago, in which 22 people were murdered by a suicide bomber and the London Bridge atrocity last weekend in which eight people were killed.

National Police Chiefs Council (NPCC) lead for protective security Deputy Assistant Commissioner Lucy D'Orsi said: "Security around polling stations is constantly being reviewed and updated by local police forces.