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 force says the increased police presence should provide reassurance to the public - without affecting the spirit of the event.
Resident group Justice 4 Grenfell say they were not consulted and will raise concerns about the appointment at the highest level.
They tried to drive off, pursued by the suspect on foot, before their car crashed into a fence.