Police are looking into possible links with another stabbing in South London on Friday. The incident happened around lunchtime in West Norwood. A 17 year old was injured and is in a stable condition in hospital.
One man has been arrested over this attack, and continues to be questioned by police.
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Detectives investigating the Parsons Green terrorist attack have arrested a 17-year-old boy in Thornton Heath, south London.
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.
Speaking to ITV News Foreign Office minister Tobias Ellwood said education was the greatest weapon in the fight against extremism.