Seb Coe 'confident' London is ready for 2012

Lord Coe said he is "confident" London is ready for the 2012 Olympic Games but added that with 30 days until they begin "we still have work to do".

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London Olympic rings unveiled

London 2012 chairman Lord Coe and mayor Boris Johnson were among the VIPs who watched as 25 metre wide and 11.5 metre tall Olympic were lowered into place on Tower Bridge.