The British Foreign Secretary, Dominic Raab, has announced the UK will suspend their extradition treaty with Hong Kong.
The announcement follows similar moves from the US, Canada and Australia as concerns rise over China's new national security law.
Chinese officials have already promised a resolute response to the changes.
Raab warned "the UK is watching and the whole world is watching".
London correspondent Vincent McAviney speaks to Corin Dann.
