Foreign Secretary Dominic Raab is expected to suspend the UK’s extradition treaty with Hong Kong later amid rising tensions between London and Beijing.
It follows the controversial national security law imposed in the Chinese territory and the UK’s decision to ban Huawei from its 5G network.
The UK has offered residency rights to three million Hong Kongers.
China has accused the UK of meddling in its internal affairs.
Beijing has insisted it is committed to upholding international law and has accused the UK and the US of seeking to destabilise Hong Kong.
Mr Raab is due to make a statement to Parliament on “our extradition arrangements and also a range of other measures that we might wish to take” in respect of Hong Kong.
The extradition treaty means that, if someone in Hong Kong is suspected of a crime in the UK, then the British authorities can ask Hong Kong to hand them over to face justice – and vice versa. The arrangement has been in place for more than 30 years.
Hong Kong has extradition agreements with 19 other countries apart from the UK, including Canada and Australia, which have already suspended theirs following the imposition there of China’s new security law – which makes acts of subversion punishable by life sentences.