The level of violence at the Notting Hill Carnival has become “unacceptable and unsustainable” the Metropolitan Police Federation has said.

A police officer was sexually assaulted and six others were bitten this year while footage has emerged of a youth running through the streets with a machete.

Video showed a gang of youths, many of whom were dressed in black and wearing balaclavas, fighting as Europe’s biggest street party descended into violence on its final day.

Two men are in hospital, one in a critical condition, following a spate of stabbings as the carnival drew to a close.

Rick Prior, vice chairman of the federation, said the levels of violence at the carnival in recent years had become unmanageable.

He told The Telegraph: “This level of violence is unacceptable and unsustainable. You can’t have it that every single year come Tuesday morning we’re contemplating these types of injuries, this numbers of injuries and sexual assaults and stabbings. It really is awful.”