More than 45,000 people flocked to Wild Life Festival at Shoreham Airport.
The third Wild Life Festival took place over Friday and Saturday (June 9-10).
Sussex Police undertook a full scale operation to see those attending did so safely.
Armed officers were deployed to the festival for the first time.
The decision follows incidents elsewhere in the country over the past few weeks.
— Louise Gardiner (@loubelou76) June 9, 2017
Superintendent Jim Bartlett said:
“I was heartened to receive many positive comments on site and also from a large number of people on social media who had relatives and friends attending and were reassured by their presence.
“It was a good opportunity for the firearms officers to engage with festival-goers and explain their role and also to be included in a large number of selfies.
“They seem to have escaped the facial ‘glitterati’ trend – not something that could be said of quite a few of the dog handlers and neighbourhood officers!”
— ivy johnstone (@ivy1386) June 11, 2017
Specialist drugs officers and dogs were also aiming to disrupt suppliers entering the site.
Nearly 100 people were dealt with by police, all, bar six, on suspicion of drugs offences.
Most of them were ejected from the festival having had an array of illegal drugs seized.
Twenty people were arrested on and around the site over the two days, mostly for drugs offences, but two for assault and one for robbery.
Fifteen cannabis warnings were issued and 59 offences were dealt with by way of community resolution.
— Sussex Police (@sussex_police) June 10, 2017
Superintendent Jim Bartlett added:
“I would like to thank all those involved in its organisation and indeed, the vast majority of those attending, for making it another successful year.
“Three years on from its launch, Wild Life has established itself as a fixture in the festival calendar and as well as its target audience of young adults, is also popular with young families.
“We are happy to play our part in doing all we can to continue that fun and friendly atmosphere.”
— Emma Brice (@ChiefinspEmma) June 10, 2017