The Hammersmith Apollo is set to re-open following a multi-million pound restoration programme.
The owners of the Grade II* listed building say that it has been restored it to its 1930s Art Deco glory.
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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.