The UK requires that everyone entering the UK completes a Passenger Locator Form. This form will ask you about the PCR test(s) you have booked to take when you return to the UK, namely your ‘Test Booking Reference Number’.
It always starts with CHRON, followed by a short series of letters/numbers and you will have this number on your initial booking confirmation email from us:
It’s also available in your Chronomics dashboard:
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