The injuries sustained by two men after being stabbed in the West End are not thought to be life threatening. They were stabbed at around 3:30 Saturday morning and found near a McDonald's restaurant in Regent Street.
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The operation carried out by Westminster City Council led to the seizure of £8,000 worth of cigarettes.
Armed troops have been stationed around Parliament to free up armed police to patrol the streets in the wake of the Manchester bomb attack.
Chelsea had planned an open top bus tour to show off the Premier League trophy and hope to add the FA Cup in Saturday's final with Arsenal.