Once you are told about Hikvision, you notice it everywhere in the UK. Cameras made by Chinese state-owned companies are used by most public bodies, including schools, universities, local authorities, and even a significant fraction of police forces. Some cameras have disturbing capabilities, including gender and age detection, and yet suffer from security vulnerabilities.
Big Brother Watch has just published an important report on this, detailing the findings from 4500 Freedom of Information requests and describing the capabilities of modern cameras by Hikvision and Dahua. I am happy to have been able to contribute in a small way.
You can read the full report here.