Avon and Somerset Police launched an investigation, receiving advice from the Crown Prosecution Service before arranging the interview, which is recorded as a public order incident.
The incident led to the group being dropped from several festivals and a US tour, and British Airways paused sponsorship of a Louis Theroux podcast after Vylan expressed no regret for the chant.
Similar comments at an Iggy Pop concert were investigated by the Metropolitan Police, and two UK gigs were postponed due to political pressure.