Police and security contractors will carry out 10,000 spot-checks a day to make sure people are quarantining after returning from holiday, it is claimed.
Home Secretary Priti Patel has authorised a huge increase in enforcement after non-essential international travel was permitted again on Monday.
It is understood a lot of the door knocking will be done by private security contractors, with police to be called if people are not complying.
Those returning from amber listed countries are required to quarantine for 10 days after their break. More than 270,000 people will have travelled to amber countries by Sunday, analysts believe - with people who flout quarantine rules facing fines of up to £10,000.
Read more on mirror.co.uk