Ahead of the State Visit by Chinese President Xi Jinping, the BBC's China Editor Carrie Gracie examines the past and future of the relationship between his country and Britain. Chancellor George Osborne has predicted a "Golden Decade" with huge benefits for both countries. The opportunities for business seem obvious. But what does history tell us about how China sees the relationship - and what are the risks to the UK in the future, both in terms of the economy and security?
Producer: Ingrid Hassler.