More than 6,000 officers will be deployed in west London on each day of the annual bank holiday two-day event – the highest number in six years, including undercover officers and members of the Metropolitan Police’s newly-formed Violent Crime Task Force.
Knife crime in London has soared in recent months and the arches will be used to deter anyone looking to attend the event with a weapon.
The exact details of where the arches will be located has not yet been disclosed.
Superintendent Elisabeth Chapple, Met Police spokesperson for the event, said: “The sheer number of people coming to carnival and the relatively small geographical area, means that it is a challenging environment to police.
“We are working closely with the event organisers to ensure it is a safe environment where people can come to enjoy themselves.”
Commander Dave Musker, police gold commander for carnival, said: “The Met seeks to support Notting Hill Carnival Ltd, carnivalists and local communities to deliver a safe and spectacular event over the bank holiday weekend.
“Our continued major effort directed against violence across the capital will continue.”