British Olympic athletes will be forced to sign contracts banning them from criticising China's human rights record before travelling to the Games.
Each athlete will have to sign a 32-page contract, which includes clauses describing how they will not be allowed to comment on "any political sensitive issues", The Mail on Sunday reported.
The British Olympic Association (BOA) confirmed that any athlete who refused to sign the contract would not be allowed to compete at the Games, which begin in August.
The move is in stark contrast to other countries, including the United States, Canada, and Australia where Olympic Committee president John Coates has said athletes are "entitled to have their opinions" and will be "free to speak".
BOA chief executive Simon Clegg said if athletes stepped out of line in Beijing "action will have to be taken".
"There are all sorts of organisations who would like athletes to use the Olympic Games as a vehicle to publicise their causes," he told the newspaper.
"I don't believe that is in the interest of the team performance. As a team we are ambassadors of the country and we have to conform to an appropriate code of conduct."