11 January - This guidance applies to England

If you get a positive rapid lateral flow test result, most people will not need to take a PCR test to confirm the result. You must self-isolate immediately if you get a positive rapid lateral flow test result.

7 January - This guidance applies to England

From 4am on 7 January you do not need to take a PCR test before you travel to England or self-isolate when you arrive. Take a rapid lateral flow test on or before day 2 after you arrive and if it’s positive you must take a PCR test.