Reading and Leeds Festivals and a number of other live music events are aiming to introduce the scheme with the support of local police forces.

Melvin Benn from Festival Republic revealed the scheme to the Press Association and expects it at "between six and 10 festivals this year".

"We talked about it during the summer of last year and the reality is that I took a decision that unless and until the National Police Chiefs' Council supported the principle of it, it was difficult for us to move forward on it."

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