Met police says it has drawn officers from other forces to form ‘significant presence’ in busy weekend of protests

Middle East crisis – live updates

Arrests have begun in central London at the largest demonstration relating to Palestine Action since the group was proscribed as a terrorist organisation.

The Metropolitan police said they had drawn officers from other forces to help form a “significant policing presence” in the capital as it faces a busy weekend of protests.

By Saturday afternoon, hundreds of people had gathered in Parliament Square for a demonstration organised by the campaign group Defend Our Juries.