You can check if this service is available in your area by introducing your postcode HERE. Can I ask what seems to be the issue with the phone? If this is available and the phone is covered under warranty, you can book this (or a postal repair) by calling our Team on 0333 000 0333.
My bad @Ulsterman , I have now upgraded my post with the right number. have you checked if the service is available in your area and is the phone presenting any damage at all?