Wild Life: Shoreham music festival sees 20 arrests
Twenty people were arrested and nearly 100 ordered to leave a music festival over drug, assault and robbery offences.
Armed officers were at Wild Life in Shoreham for the first time this year after recent terror attacks.
Specialist drugs teams seized a significant quantity of illegal substances at the event on Friday and Saturday.
More than 45,000 people there saw acts including Fatboy Slim and Stormzy.
Supt Jim Bartlett from Sussex Police said four people are facing court appearances over drugs offences.
"Several people have already been charged with possession offences and face court, and there are seven more facing investigation into possession with intent to supply" he added.
He said specialist drugs officers and dogs were at the festival to stop suppliers entering the site.
Armed officers were at the event after terror attacks in the UK and elsewhere, he added. But he said the force received positive comments from people who told officers they were reassured.