A man who swam into the path of the University Boat Race has been sentenced to six months in prison for causing a public nuisance.
The judge said Trenton Oldfield had acted dangerously and disproportionately, and had not made it clear what he was protesting against. Mr Oldfield had claimed the event was elitist.
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Sir Bruce entertained audiences for more than seven decades.
Work in the tower will also pause over the bank holiday weekend.
The attacker grabbed her dog lead wrapped it round her neck and started to strangle her before running away.