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.
More top news
Today there'll be plenty of sunshine across the British Isles with wispy cloud towards the coast.
A Star Wars-themed fleet of planes is set to take to the skies after Japan's Ana Airways announced a partnership with Lucasfilm.
A gorilla almost smashed through a glass enclosure when he saw a little girl beat her chest.