Emergency services are preparing for a weekend that could be as busy as New Year's Eve when pubs reopen in most of England on Saturday.
Police federation leaders warned that the public will be "out in droves" on July 4, with one fearing a return to Accident and Emergency departments resembling "a circus full of drunken clowns" at weekends.
Metropolitan Police Commissioner Dame Cressida Dick said her force has been planning for Saturday "for some time" and that the public will see "a lot" of officers on London streets.
She told the BBC Radio 4 Today programme: "There will be a lot more ready should people be out of order, should people get violent.
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