Hikvision (and Dahua & others) have been added to a US blacklist that prevents them from purchasing / using US components:
US bans Chinese company behind 1.3m UK CCTV cameras over spying allegations
Pressure mounts in UK to take action over...
Hikvision added to US "Entity List" blacklist preventing them from using US components
US bans Chinese company behind 1.3m UK CCTV cameras over spying allegations
Pressure mounts in UK to take action over...
Hikvision added to US "Entity List" blacklist preventing them from using US components