Commander Adam Slonecki, who is leading Saturday’s policing operation, said: “All those intending on coming to this event know that supporting a proscribed organisation is unlawful – they are essentially meeting to purposefully commit a crime.
“The public would rightly expect us to be proactive and not just standby and wait for offences to be committed.
“I want to be clear – it is not just those who hold up placards who should expect to be arrested.
“Anyone officers consider to be playing a key role in organising the event, giving instructions to others and/or providing logistical support will very likely be committing an offence and face enforcement action.
