Superintendent Roy Smith of the Met, said: “It is clear that in recent years the landscape of the night time economy in London has changed and thankfully we have seen a reduction in serious incidents at promoted music events, particularly those involving firearms.”

London Mayor Sadiq Khan had called for a review of the form’s use earlier this year.

The force said it would instead use a new “voluntary partnership approach” across the city.

“This will provide an excellent opportunity to share information at a local level and work to identify any enhanced risk to ensure the safety of the public,” it said.