Nicholas Jacobs, 44, has been charged with the murder of Pc Keith Blakelock, who died in the Broadwater Farm riots in 1985, the Crown Prosecution Service said today.
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A lamp in the tower which houses Big Ben is to be switched off for the first time in more than 70 years.
Sir Bruce entertained audiences for more than seven decades.
Work in the tower will also pause over the bank holiday weekend.