They will also not need to isolate.
Fully vaccinated passengers who have travelled outside of the Common Travel Area will need a single border test, but won’t need to isolate. Those who are not vaccinated against covid will need PCR tests on arrival and Day 8, and can only leave isolation following a negative Day 8 test.

Pictured: Despite numerous changes, the £25 lateral flow packs on arrival will remain a staple for the foreseeable future.
However, in line with the UK’s regime, Guernsey will not be differentiating between fully vaccinated and unvaccinated passengers arriving from countries on the ‘red list’.
If arriving into Guernsey directly from a red region, they’ll need an arrival and Day 9 test, and will only be released if they get a negative result back from their second test.
If arriving from a red zone via the UK, they will have to isolate in the UK in line with UK requirements. Once these are complete, they will have no further isolation requirements upon arriving in Guernsey.

Pictured: All arrivals will still need to complete the travel tracker.
Yesterday also saw the island’s Chief Minister announce changes to self-isolation rules for direct contacts of someone with covid.