Door Fuel Tank Filler Access
What is broken? I presume the plastic bits that hold the door closed, either on the flap or the bits fixed to the body.
One part number to get you started is ARV780010 which is called a bezel and attached to the flap bit.
Another bit is called a retainer, part number BPA780110, and is the springy clamshell bit attached to the body.
There is also something called an actuator assembly, part number BPA780100.
This is not be be confused with the actuator assembly, part number FSG500013 which is the power lock/opener bit on the D3 models but not on our LR3 models that have effectively a non locking always unlocked manual gas flap.
These numbers will give you a heads up at your local friendly Land Rover dealer and indicate that the small bits can be ordered. There are a few other parts numbers re the complete unit, but the dealer has the expanded views of all the parts. The parts will not cost much and you should have them in a couple of weeks probably out of the UK.