Well, it could have been originally just for the conservatoire socket (DP switch for isolation in case of issues), and had the other socket added later, or it could have been fused down because there was more than one outlet.
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