It says the move builds on action taken last year to halt the installation of new equipment on the government estate and will provide "reassurance" that departments are removing surveillance equipment from sensitive sites.
The department of health said 29,474 people have tested positive for the virus, an increase of 4,324 cases since Tuesday, as the country remains under lockdown with the government's advice for people to stay at home and observe strict social distancing when outside for exercising or buying essentials.
Thousands of farmers are protesting on various borders of Delhi since November 26, seeking repeal of three farm laws enacted in September.
Johnson spent the Monday night in the ICU at a London hospital in a move Downing Street said was a "precaution" should the British prime minister require ventilation to aid his recovery from COVID-19.