Unlike his trip to Sri Lanka, where David Cameron raised the issue of human rights, the British Prime Minister strategically avoided an important issue during his visit to China. Another upsetting incident was ban on a British journalist to attend a press conference. Cameron also remained quiet on issues of Yibet and even China's jailed Nobel Peace Prize winner, Liu Xiaobo. Asked whether he had raised Tibet with the Chinese leaders, Cameron said only that he had covered "all the issues". Accompanied by a large business delegation Cameron could attract China for investment in the UK infrastructure. The Prime Minister said that China could invest billions in nuclear plants, HS2 rail and other projects. The Prime Minister is being accompanied in China by a delegation of senior UK business leaders, including Sir Andrew Witty, chielf executive of pharmaceutical conglomerate GSK, and Mark Allen, boss of food producer Dairycrest.