Six members of the anti-monarchy Republic group were arrested in central London while they wanted to protest. They were released late Saturday, more than sixteen hours after their arrest, sparking strong criticism.

London police justified themselves at length by explaining that they had arrested six people "suspected of being equipped to chain themselves" In total, London police made 64 arrests on the day of the king's coronation, including environmental activists, Human Rights Watch said.. "We regret that the six people arrested were unable to join the group of protesters in Trafalgar Square and elsewhere along the route of the procession," Scoland Yard concluded.