In the largest ever commission of its kind, Mark Wallinger today unveils Labyrinth, 270 unique works, one for each of the 270 stations on the London Underground network.
The commission, from Art on the Underground, is one of the highlights of a series of special events and commissions in 2013 to celebrate the 150th anniversary of the London Underground
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The robbery is being connected to a spate of thefts in south east London.
Workers at two rail companies in the South East are to stage two 24-hour strikes
Eight cases of fraud and four possible thefts are being investigated, Scotland Yard said.