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Video: Sadiq Khan and Cressida Dick lay wreaths at 7/7 memorial

Mayor of London Sadiq Khan has said the victims of the July 7 attacks will never be forgotten as he recalled how the city's response "inspired the world".

Friday marks 12 years since 52 people died and hundreds more were injured in bomb attacks on the capital's transport system in the single worst terrorist atrocity on British soil.

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