This is just some of the arsenal of weapons seized by police at Notting Hill Carnival.

The haul, including knives, machetes, batons and a knuckle duster were taken by officers patrolling the two day event over the August bank holiday.

A total of 407 people were arrested and there were 21 assaults on police officers as the carnival saw a surge in violence and knife crime.

Of these, 57 were taken into custody for possession of knives and other bladed weapons.

Scotland Yard Detective Superintendent Simon Messinger said: “This just a selection of the knives we recovered, many more have been seized and are undergoing forensic examination.

“It’s a good demonstration of what people are willing to take to a public event.”

He added the number of weapons seized is more than double that of last year and suspects found carrying them were as young as 14.

The number of arrests this year was the highest in a decade and 60 per cent more than last year.

In one incident a 19-year-old boy was taken to hospital with critical injuries after being stabbed. Three youths all aged 18 were arrested.

The police officers injured during the carnival included one who was stabbed and taken to hospital with non-life threatening injuries. Another was bitten on the arm as he tried to stop a group of men committing criminal damage.