The police have told ITV News "a number of arrests" have been made under section 12 of the Public Order Act after cyclists taking part in the Critical Mass bike ride broke the conditions of their protest in central London.
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Detectives investigating the Parsons Green terrorist attack have arrested a 17-year-old boy in Thornton Heath, south London.
Speaking to ITV News Foreign Office minister Tobias Ellwood said education was the greatest weapon in the fight against extremism.
A review of the law is being considered after a cyclist who crashed into and killed a mother-of-two was convicted using a Victorian law.