Extending a spurred socket

Renovating childs bedroom on top floor. I want to put in a new double socket. There are three in the room. Unfortunately the most convenient socket to extend from is an existing spur (other two are on the ring). My understanding is that it is ok to extend a new spur from this if I replace the existing socket with a fused connection unit - thus making it a fused spur. It really is not worth putting the new and existing spur back on the ring - would involve a fair bit of demolition - and this is only for a bedside reading lamp.
So my first question is : am I correct in thinking that by converting the existing spur to a fused spur - I can then extend further sockets off this?
My second question might raise a few eyebrows - and I think I can guess what the answer will be. On exploring the route for the new socket - it became clear that raising the floorboards (chipboard type - house 25 years old) is going to be quite difficult. Broke one of the boards already while raising it. They are nailed and screwed very firmly indeed.
I have removed all the skirting and will be replacing with new. There is a nice little gap between the plasterboard and floor which is fairly deep and could easily take cable, perhaps in conduit. Would it be completely out of order to route the new cable in this gap - which would end up behind (at the bottom of) the new skirting? I guess future owners will conceivably stick long nails or screws into the skirting - so I guess this is out? Or is there some accepted way of doing this - such as putting the cable into some sort of armoured protection?
Thanks
--
Matthew

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On Wed, 3 Sep 2003 20:09:15 +0100, Matthew Barnard

Yes, you can. The FCU can be fitted with a fuse of up to 13A and then you can run your additional sockets downstream of that.

You would have to use a steel conduit. Certainly plastic conduit or just concealing the cable is out, for the exact reason you describe.

.andy
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"Matthew Barnard" wrote | I have removed all the skirting and will be replacing with new.
If you hadn't gone and done that I would have suggested 16x16mm mini-trunking, which can be quite unobtrusive running along the top of modern skirting esp when painted over to match.
Owain
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