You seem to be saying that having more sockets in itself increases risk. My view is that this isn't generally true - if risk increases, it's likely to be because of some change in usage, not because there are more sockets. I agree that one could assess an increased potential risk if an additional socket was located such that it was more likely to be used in a risky fashion (e.g. located such as likley to be used for outdoor equipment) - but I have been specifically excluding that situation in everything I've written.Maybe not the situation, but as far as the percentage of the increased risk I would say it is.
If it were literally never used (or 'touched') then that surely would be true - and any buried wire which represents a risk to someone with hammer and nails has always been there - so no change in risk. In terms of 'touching' (rather than 'using'), I supose that one additional non-RCD-protected socket theoretically increases the risk to children with screwdrivers/paperclips, or decorators, but I would imagine that the increase in risk would be extremely small (if there were already lots of similar sockets).If the socket was never used, does that mean it will offer no potential risk at all ever?
Whatever, as I wrote last night, despite all our discussion, the OP hasn't yet told us that the circuit isn't RCD protected - so the discussion may all be moot!
Kind Regards, John