Which countries are on the UK red list?

The UK has introduced a new system for international travel, loosening testing requirements for many fully vaccinated travelers and designating destinations either "red" or "green."

(CNN) — The UK has introduced a new system for international travel, loosening testing requirements for many fully vaccinated travelers and designating destinations either "red" or "green."

There are currently 54 countries on the UK's red list -- including Mexico and South Africa. The list is updated every three weeks, and a refresh is expected towards the end of the week beginning October 4.

Green list rules