Why is my address remote?

Why if my order is well over £40 are you charging for delivery to mainland address?
It’s AB41 XXX


Hi Allan
AB41 is only 25 minutes from Aberdeen, but there aren't many people there and delivery services are sparse.
You can get non-rush parcels delivered at a sensible price.
But the target transit time for our parcels has to be 24 hours. Otherwise you would complain that they had defrosted.
No courier company offers a next day delivery all the way from us to you.
So I hope you can understand that we must classify your address as "remote".
To get the necessary delivery timing, we must use Royal Mail Special Delivery. This costs ££££.
Our list of remote post codes is readily available on the website.
Just click Delivery. You will find the link straight away, 
All the best