I think it relates to this incident

[Filmer] ...face(s) three charges of unlawfully attempting to take fish contrary to schedule one of the Theft Act and three offences of fishing without a rod license on the River Exe in Devon, in June 2020.

His conviction followed close partnership working between the Angling Trust Voluntary Bailiff Service (VBS) in support of the police, Environment Agency Fisheries Enforcement Officers, and local angling club bailiffs.

In his capacity as club bailiff for Exeter & District Angling Association, who control the fishing rights on the river in Exeter, the volunteer [person in video?] found [filmer] fishing repeatedly without a club ticket.

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After Lee was observed and reported illegally fishing for a third time, the volunteer bailiff was able to support the attending officer, who found the offender to be fishing without permission and without a valid license. They seized the fishing tackle and he was reported for the offences and subsequently summonsed to attend court.

... fined a total of £300 for the offences and ordered to pay a victim surcharge of £34 and costs of £85 to the Crown Prosecution Service. The magistrate also ordered the fishing equipment, which was confiscated by police, be forfeited under the Salmon and Freshwater Fisheries Act 1975 and destroyed by Devon & Cornwall Constabulary.