The Met Police have charged two teenagers with the murder of 19 year-old Charlie Burns in Homerton on Monday.
19 year-old Ashan Crosdale from the Hackney area and a 16 year-old boy will appear before magistrates on Friday.
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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.