Boris Johnson celebrated an agreement for British designer Thomas Heatherwick to build two Beijing underground stations by taking a trip on the network himself. London's Mayor said Britain remained competitive internationally in creative industries, like design and fashion.
Thomas Heatherwick, who designed the cauldron that featured in the London 2012 Olympics opening ceremony, could also be commissioned to build an entire line for Beijing's underground, which could include 15 to 20 stations.
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A 24-year-old man has been arrested on suspicion of murder after the body washed up on the Thames shoreline.
Seven people have now been arrested after a man died from serious head injuries
The 38-year-old officer was on his way home from a night shift when he collapsed. His death is not being treated as suspicious.