My Passenger Locator Form Reference number isn't unique

We have previously generated unique Passenger Locator Form references per order - not per test. This means, for PLF references that begin with the letters CHRON, that there'll only be one PLF reference per order. This may mean you now have the same reference as others you're travelling with, it won't cause any issues with your return travel.

From 26th October, Passenger Locator Form References will begin with the letters CHRO and will once again be unique to each test.