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Roundhouse Theatre transformed by giant clock

6 August 2013 Last updated at 15:43 BST

A new art installation which transforms the Roundhouse Theatre into a giant clock has opened to the public.

The light installation - Timepiece - by award winning artist Conrad Shawcross is the third in the series of August exhibitions which sees its central space transformed for the summer season.

The artist and Marcus Davey, the theatre's artistic director, talk about what impact they hope the art installation will have.