The Chinese embassy in the UK says these are "completely unfounded" claims amounting to "malicious slander". The two Chinese nationals sanctioned by the UK are Zhao Guangzong and Ni Gaobin and the company is Wuhan Xiaoruizhi Science and Technology Company Ltd, said by the British government to work for the China state-affiliated cyber espionage group Advanced Persistent Threat Group 31 (APT31).
The UK sanctions will freeze assets, barring UK citizens and businesses from handling their funds or resources. A travel ban will also prevent them from entering or remaining in the UK. "The UK will not tolerate malicious cyber activity," Mr Dowden said. "It is an absolute priority for the UK government to protect our democratic system and values."