Protesters planning to attend the next mass demonstration against the Palestine Action ban will be told to withhold their personal details from police.
The tactic is intended to force mass processing by authorities, to make it “practically impossible” for them to arrest everyone.
Defend our Juries, the pressure group behind the protests, is opening sign-ups on Friday for its upcoming demonstration on September 6.
The group is aiming to register 1,000 people for their next event, which would make it the largest demonstration opposing the proscription of Palestine Action since it was banned in June.
A spokesperson for Defend our Juries previously said: “With all the real challenges facing the country, it’s crazy that the Labour government has generated a political crisis over people quietly holding cardboard signs against genocide in Parliament Square. This won’t be forgotten.”
More than 2,500 people have reportedly shown interest in taking place in the demonstration so far.
Among the detained was Sir Jonathon Porritt, a former government adviser to Sir Tony Blair and Gordon Brown, who said it was a “privilege” to be arrested.
All but 10 were arrested under Section 13 of the Terrorism Act for displaying supportive placards or signs.
The Met said 212 of those arrested were transported to police stations after either refusing to provide their details or having been found to already be on bail, according to The Guardian.
The remaining 320 were arrested and released on bail after giving their details to officers at processing points near Parliament Square.
People who sign up for the demonstration will have to sign an Action Briefing Document, setting out the risks.
The document, which is available to read on the Defend our Juries website, states: “Joining this campaign comes with risk.”
It adds: “This action will only proceed if at least 1,000 people have committed to it. Based on the response to 522 people being arrested on 9 August, we believe that if 1,000 hold signs on 6 September, until arrested or until the police give up, there is a good chance the ban could be lifted.”
To take part, people must agree to the conditions which state: ‘I understand that joining this action comes with risk of arrest and other legal consequences.’
The document advises protesters not to comply with street bail, whereby they are processed on the side of the road, bailed and told to attend a police station on another day after handing over their details and ID.
It states: “There is no obligation to give your details to the police before being taken to a police station. Our recommendation is that people refuse street bail for their own safety and to follow through to the end of the action with the spirit of civil resistance. If the police want to arrest us, they ought to do so properly.”
Participants are instructed to not provide any details which means officers will have to transport them to a police station in order to carry out the arrest.
A briefing document for September 6 has recommended that attendees refuse to comply with the "charade" of street bail, in which officers arrest demonstrators and bail them to attend a police station on another day.
Organisers say officers will have to take protesters to a police station if they do not give their details to them.
They also suggest that demonstrators do not walk with police if arrested, adding: "If they insist on arresting us, they will have to carry us."
The document reads: "It will not be practically possible for the police to arrest 1,000 non-compliant people on the same day, and that is the strategic rationale behind non-compliance, it increases pressure on the state."
Defend Our Juries spokesman Tim Crosland said: "We're not setting out to manipulate the system, we're trying to preserve due process rights, which is what normally happens.
"It's a very bizarre state of affairs that people should be arrested for a Terrorism Act charge and then five minutes later they're back on the street, and they haven't even been interviewed. It's not serious. It's not real."
Protests are set to continue until a High Court challenge over Palestine Action's ban in November.
The move to ban the group came after two Voyager aircraft were damaged at RAF Brize Norton in Oxfordshire on June 20, which police said caused about £7 million worth of damage.
Home Secretary Yvette Cooper announced plans to proscribe Palestine Action three days later, saying the vandalism of the planes was "disgraceful" and the group had a "long history of unacceptable criminal damage".
Membership of, or support for, Palestine Action is a criminal offence punishable by up to 14 years in prison under the Terrorism Act 2000.
It comes as Amnesty International UK said it has written letters addressed to the UK's chief prosecutors, calling for no further action against all those arrested at Defend Our Juries protests.
Its chief executive Sacha Deshmukh said: "The UK's prosecutors must end the prosecutions of these peaceful protesters and make clear that they won't be bringing charges against those arrested.
"Peaceful protest is a fundamental right. People are understandably outraged by the ongoing genocide being committed in Gaza and are entitled under international human rights law to express their horror."
