[Suze65]

So you've found the FED1012 form, that's a good start 👍 on the same page you will see another heading to click on that helps you how to fill it in and the address . But I will give you the address
AHVLA Wildife Licensing Registration Service
Floor 1 Zone 17
Temple Quay House
2The square
Bristol
BS1 6EB
You need to post the old A10 cert, a copy of the chip forms and the application form and the fee, which is £31.

If you want to phone and check all this its 0117 372 3700

Hope this helps 😁