"On 31 March, the United Kingdom will be placed on the green list," Guillaume Bazard wrote. "Disappearance of compelling reasons for non-vaccinated travellers, who will have to present a negative test (72-hour PCR or 48-hour TAG)."
Prior to the move, unvaccinated travellers could not enter the country unless they had an essential or "compelling reason" to do so. They also had to isolate for seven days on arrival.
Vaccinated travellers will also no longer have to submit a declaration form confirming a lack of Covid symptoms.
https://twitter.com/GuillaumeBazard/status/1509162252812881924
