Police arrested 51 people at the Leeds Festival at the weekend – nearly twice as many as the 28 arrested last year.
Officers said many of those held were questioned on suspicion of drug-related offences as the result of “pro-active” efforts to deal with the problem. There were also arrests over suspected assaults and thefts.
West Yorkshire Assistant Chief Constable Andy Battle said: “Although the number of arrests has increased compared with last year, it is still an extremely small figure for such a major event attended by around 70,000 people.
“Protecting people from the dangers of drugs is always a specific priority for the festival’s organisers who worked closely with West Yorkshire Police to target the issue.
“The vast majority of this year’s arrests were as a result of the proactive work that was done around drugs offences, which indicates the success of that work in helping to ensure the safety of people attending the event .”
Police said they were also looking into reports that two teenage festival-goers suffered burn injuries when an aerosol can was thrown onto a fire at the Bramham Park site.
Sophie Turner, 18, was one of two friends who were being treated in the burns unit at Wythenshawe Hospital, Manchester, for injuries to their faces, hands, arms, and legs.
Phil Turner, her father, told the Manchester Evening News: “My daughter and her friend could have lost their eyesight and they could still be disfigured for life.
‘This is because some irresponsible idiots decided to entertain themselves by throwing an aerosol at the campfire.
‘They were looking forward to a great weekend away but the explosion burnt them so badly they are now at Wythenshawe Hospital having been extremely badly burnt.”