David Cameron in China

The union flag is hoisted beside the flag of the People's Republic of China in front of Tiananmen Gate Photograph: Frederic J. Brown/AFP/Getty Images

David Cameron looks back while walking past flight attendants holding British and Chinese national flags upon his arrival at the Beijing Capital International Airport Photograph: Andy Wong/AP

Cameron arrives for a trade mission in Beijing Photograph: Darren Staples/Reuters

Hall attendants fix the union flag to a pole prior to a welcoming ceremony for Cameron at the Great Hall of the People in Beijing Photograph: Adrian Bradshaw/EPA

A Tesco store worker waits for Cameron's arrival Photograph: Darren Staples/Reuters

Cameron meets staff during a visit to a Tesco supermarket in Beijing Photograph: Stefan Rousseau/PA

Cameron leaves a Tesco store during a trade mission in Beijing Photograph: Darren Staples/Reuters

Cameron meets social entrepreneurs in a converted Chinese temple in Beijing today Photograph: Stefan Rousseau/PA

Vince Cable, the business secretary, talks to George Osborne, the chancellor, before a welcoming ceremony for Cameron at the Great Hall of the People in Beijing Photograph: Adrian Bradshaw/EPA

An honour guard stands beneath a tapestry of the Great Wall of China at a welcoming ceremony for Cameron Photograph: Adrian Bradshaw/EPA

Cameron attends a welcoming ceremony with the Chinese premier, Wen Jiabao, at the Great Hall of the People Photograph: Adrian Bradshaw/EPA

Cameron inspects an honour guard Photograph: Darren Staples/Reuters

Cameron at a contract signing with Wen at the Great Hall of the People Photograph: Stefan Rousseau/PA

Osborne and Cameron attend a signing ceremony with Wen at the Great Hall of the People Photograph: Petar Kujundzic/AP

Cameron drinks a toast at the contract signing with Wen, along with Michael Gove, the education secretary, Cable and Osborne Photograph: Stefan Rousseau/PA

Cameron and his cabinet ministers toast with Wen
Photograph: Darren Stables/Reuters

Cameron and British business leaders meet Wen at the Great Hall Photograph: Andy Rain/EPA

David Cameron speaks at the International Financial News World Summit Photograph: Darren Staples/Reuters

Cameron and Wen review an honour guard at a welcoming ceremony for the prime minister Photograph: Frederic J. Brown/AFP/Getty Images

Cameron meets Chinese schoolchildren at the Great Wall Photograph: Andy Rain/EPA

Cameron walks next to two students as he visits the Great Wall Photograph: Darren Staples/Reuters

Cameron meets Chinese schoolchildren at the Machikou Central primary school Photograph: Andy Rain/EPA

Cameron and Lin Jianhua, executive vice-president and provost, at Peking University Photograph: Stefan Rousseau/PA