UK BORDER FORCE TOLD TO LET ARRIVALS FROM GREEN AND AMBER COUNTRIES IN WITHOUT ANY CHECKS

Seems only arrivals from red countries to be checked.

From Border officials told not to make Covid checks on green and amber list arrivals :

Border officials are no longer required to make basic Covid checks on arrivals in England from green and amber list countries, according to leaked instructions that prompted claims the government is turning a blind eye to the risk of importing Covid cases.

A change that came into effect on Monday means Border Force officers no longer have to verify whether new arrivals have received a negative Covid test, have booked a test within coming days or have a passenger locator form showing an address where they will isolate if necessary.