New rules introduced to make travel to the UK “easier and cheaper” have come into force. The UK’s traffic light system involving green, amber, and red lists has been scrapped, with locations categorized as either on the red list or not. It comes amid reports the number of countries on the red list will be slashed to nine from 54 later in the week, with destinations such as Brazil, Mexico, and South Africa expected to be opened up to quarantine-free travel. Fully vaccinated residents—and unvaccinated under 18s—from more than 50 countries and territories can now enter the UK without needing to complete a pre-departure lateral flow test, take a day-eight post-arrival PCR test costing around £65 ($88), or self-isolate at home, with just a single day-two post-arrival test needed. Under 11s were already exempt from pre-departure testing. People arriving from a red tier destination will still be required to spend …