From 0400 BST on Monday 4 October, the amber and green lists will be merged into one list.
Anyone who's fully vaccinated will no longer have to take a PCR test before travelling back to England from one of these countries.
That includes all of Europe and many other popular destinations.
They will still have to take a PCR test two days after arrival, but this will be replaced by a cheaper and simpler lateral flow test later in October.
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You can read more on the BBC website here: https://www.bbc.co.uk/news/explainers-52544307
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