Speaking to Premier, Bob Fu, the founder of China Aid said: "For a western democracy like Great Britain to do this without a public standing is really almost a betrayal of our own founding values.
"I really feel - why are we doing this?
"And I understand the importance of trade and the investment - but trade and investment are mutually beneficial.
"It's not only that Great Britain needs Chinese money for business, the Chinese also need to find somewhere to do business - and it's not a one sided story.
"To sacrifice the fundamental values of human rights is really a betrayal I think to our values."
David Cameron has been entertaining Xi Jinping at his Buckinghamshire country retreat.
The pair have been discussing China's role on the world stage on day three of the Chinese president's state visit.
The Foreign Office has been quick to state that '"no issue is off the table" in their conversations and that human rights would come up.
Bob Fu told Premier that Christians are worse off under Xi Jinping than they were during the Cultural Revolution.
He said the President is known, like Chairman Mao was, as an Emperor: "The Chinese President's brining £30 million coming here, and that intimidates even the British Prime Minister not even to speak up," Mr Fu said.
Mr Fu also stressed that there are between 60 and 100 million Christians in China - many of whom face daily oppression.
However he claimed the west is not doing much to help: "There are 1,500 Chinese churches in North America and Canada, but so far we've only - so far - received two texts from two Chinese churches to support our own fellow persecuted brothers and sisters."
Bob Fu has spent time in prisons and unregistered 'black jails' for his beliefs.
He described one situation when his interrogator slammed his hands on the table and told him that Christians were still behind him: "He said 'Bob Fu - many people in the outside world are still caring about you.'
"That one sentence gave me the sustaining encouragement to continue my imprisonment time."
He told Premier that it was the Gospel that got him through.
Listen to the full interview with Premier's Hannah Tooley and Bob Fu here:
