The other figure that's gone missing is of Sir John Houblon, the first governor of the Bank of England. He was the grandson of a Huguenot refugee.
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Police say he may have attacked more children and urged them to come forward.
The suspect walked up to a Tesco employee and shoulder barged him to the ground before punching him repeatedly in the face.
Up to 200 noisy motorists regularly meet in Imperial Way, Croydon attracting crowds of up to 400 people.