The Government has announced the list of countries on the new traffic light system. There are only 12 countries that are on the Green list, which allowed people to enter the UK without the need to self-isolate or go into quarantine. These countries are:
This list will be reviewed every three weeks from 17th May
Also of note is the Border Force stating that it will take 14 or 15 times longer to process passengers at ports of entry into the UK.
The following countries have been added to the Red list
Here’s a link to the full guidance on the Traffic Light system which contains full lists of countries in each category and rules for where people transit through red or amber countries.
And here’s the DfT Press Release