A host of Paralympians returned to the Olympic Park today to mark a year since the 2012 Games. They were joined by the Mayor and 12-thousand others in celebration of National Paralympic Day.
Gold medallist and Sutton resident David Weir was there.
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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.