London has demanded that Beijing close Chinese "secret police stations" in the UK. The stations are supposed to provide administrative services but are also accused of using them to prosecute dissidents.
Britain's Home Office and London police launched preliminary investigations after human rights group Safeguard Defenders last year documented the existence of secret China security centres in Britain. China has long denied this, saying these "centers" are not at all related to any police but "their main purpose is to provide free assistance to Chinese citizens"