When you buy any retail product you automatically have rights afforded to you under either the Sale of Good Act before OCt 2015 or the Customer Rights Act after October 2015. These are the basis of your legal rights and they are based on your contract of sale which is with your seller not necessarily the manufacturer.
Both you and your seller have made your positions clear such as your relative addresses, and if either party were unhappy with any of the pre contract details you would of course not signed to agree the contract.
If you had been aware that your rights rested solely with your seller, but the seller is too far away for you, you may possibly have not agreed to purchase, but legally this works both ways, and under both acts, the seller is responsible for all transit costs to rectify faulty goods!
So presuming the seller had your address, and if they were concerned about the distance they would not have agreed the contract. The fact they did agree the contract means they have accepted the risk of costs involved with travelling to effect warranty repairs under the your statutory rights.
However the same is not true when you have elected to have product failure repaired under the Manufacturer's Guarantee. This is not covered by SoGA or the CRA, and the manufacturer can limit their offer in any way they choose. Most decline to cover recovery costs.
So as a customer you have statutory rights, but the seller would prefer you to use the manufacturer's Guarantee becasue if you elect to use it, the dealer is not responsible for recovery costs.
The big question is, do dealers ask you which scheme you want to use? or do they make an assumption on your behalf, which actually costs you money, time and effort?
Look up your rights under SoGA and the CRA.