London Mayor Boris Johnson said that Russian President Vladimir Putin should "strip to the waist" and take part in the Olympic judo event.
Mr Putin, who holds a black belt in the martial art, will visit Downing Street before heading to the Olympic Park.
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At least 27 high-rise blocks of flats in 15 local authority areas have failed fire cladding safety tests, the Government has announced.
New Zealand have beaten the British and Irish Lions 30-15 in the first Test in Auckland.
The company said its role was not to decide what was or was not compliant with local building regulations.