You can leave the box there with a blanking plate over it but you must not tile over the box. It has to remain visible to denote that there are killer cables in the walls.
Is a blanking plate that much better than a shaver socket?
I would have thought most people would rather have a functional accessory on a wall, even if they don't use it, than a blank piece of plastic just covering up a hole.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local