There's been over a 400% increase in youth unemployment in London since April 2000, according to the latest TUC report. They say a number of factors including the recession have created the problem.
Youngsters unemployed for between 6 months to a year - has increased by 85 % since 2000.
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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.