I am flying to Greece from the United States with a connecting(transit) flight from the UK. I filled out a Personal Locator Form for Greece. I recently received a notice from British Airways that I need to fill out a Personal Locator Form for entering the UK even if it is only to catch a connecting flight. My question is will my Greece Personal Locator Form suffice? Or do I need a separate one for the UK. Each country has its own form that is managed by its own national agency. I called American Airlines who I booked this ticket through and they said I didn't need the UK one. Just checking here for a second opinion.
The official word is on the official webpage of the UK Government:
The requirements are quite clear. Scroll down to "Before travel to England":
Before travel to England
If you will be transiting through England,
you need to do the following before you travel:
take a COVID-19 test
complete the passenger locator form
If you will be transiting landside through England you need to do the following
when you complete your passenger locator form.
and then it continues with what you need to do if you are leaving the airport and transiting landside.
A Greek form is for the Greek government. A UK one is for the UK government, it tells them what you will be doing in the UK for UK Track and Trace (the covid tracker) (you will be transiting). You need the UK one for flights to the UK and you need to have evidence of a covid test in the last 3 days (the one you need for entry into the USA will suffice if the times work - if you are leaving the same day that would work).
Requirements can and do change frequently. That is the position today. This does not apply if you have visited or transited a Red list country in the prior 10 days, other rules do. Countries on one list today may be on a different list tomorrow. If you are visiting Turkey as well as Greece, Turkey is on the Red list at the moment. Greece is on the Amber list today.