Three people in London, Britain, have been charged under the National Security Act with assisting the Hong Kong intelligence service and foreign interference.
The trio will later appear in custody at Westminster Magistrates' Court, the BBC reported on Monday.
The Metropolitan Police said the Hong Kong investigation was not related to any separate case involving Russia.
As part of the investigation, 11 people were detained under Section 27 of the National Security Act.
The three men charged include Chee Leung (Peter) Wai, 38, of Staines-upon-Thames Matthew Trickett, 37, of Maidenhead; and Chung Biu Yuen, 63, of Hackney.
Commander Dominic Murphy, head of the Met's Counter Terrorism Command, said: "Want to reassure the public that we do not believe there is any widespread threat to them. This investigation is ongoing, but now that allegations have been made I would urge people " I will not speculate or comment further on this matter.”
Eight men and one woman were arrested by counter-terrorism officers in the Yorkshire region on 1 May, police said. The next day, one man was arrested in London and another man was arrested in the Yorkshire area.
On 10 May, seven men and women were released from custody.
The trio will later appear in custody at Westminster Magistrates' Court, the BBC reported on Monday.
The Metropolitan Police said the Hong Kong investigation was not related to any separate case involving Russia.
As part of the investigation, 11 people were detained under Section 27 of the National Security Act.
The three men charged include Chee Leung (Peter) Wai, 38, of Staines-upon-Thames Matthew Trickett, 37, of Maidenhead; and Chung Biu Yuen, 63, of Hackney.
Commander Dominic Murphy, head of the Met's Counter Terrorism Command, said: "Want to reassure the public that we do not believe there is any widespread threat to them. This investigation is ongoing, but now that allegations have been made I would urge people " I will not speculate or comment further on this matter.”
Eight men and one woman were arrested by counter-terrorism officers in the Yorkshire region on 1 May, police said. The next day, one man was arrested in London and another man was arrested in the Yorkshire area.
On 10 May, seven men and women were released from custody.
