Twenty six people were arrested during the London Feis festival in Finsbury Park at the weekend.
The arrests, which were made either for possession of drugs or for intent to supply controlled drugs, relate to offences within the festival grounds and just outside.
The concert drew crowds of more than 45,000 on both Saturday and Sunday, with fans eager to see legendary singers Bob Dylan and Van Morrison back to perform once more in the park.
It was the first time the duo have played at the venue during the same show since they shared a stage in 1993.
The Irish themed event, which marked 21 years since the introduction of the now deceased Fleadh events in north London, also saw bands like The Saw Doctors, Christy Moore and The Fureys perform.
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