Arrest rates were twice as high at Notting Hill Carnival than the Unite the Kingdom march, figures suggest.
Twenty-five demonstrators were detained as tensions flared during what is thought to be the largest Right-wing rally in British history on Saturday.
Up to 150,000 protesters, many of whom were draped in St George's flags, brought London to a standstill as they marched through the capital's streets demanding the unfolding migrant crisis is brought under control.
Police claimed they faced 'unacceptable violence' as they scrambled to bring the Tommy Robinson-organised event under control, wielding their batons and pinning demonstrators to the ground.
If the Metropolitan Police's attendance estimates are correct, it means around one in every 6,000 attendees were arrested – or 1.7 in every 10,000.
