You could always get some flat cable 20m FLAT Cat5e Ethernet/Patch Cable - GREY: Amazon.co.uk: Electronics - easier to hide under carpets (if you have them)
I never even gave a thought to flat cat5e! That would make life so much easier, if the skirting was to come off.
In regards to the skirting coming off with plaster, that's not a serious problem, but one to be semi-concerned about. Just goes to show how bad your plaster is!
Anyway, i think Rawns is gonna leave it as it is, so i'll leave him be. If you need any other ideas Rawns, or anyone else does, gimme a shout.
Why not try powerline adapters...I have a pair here and my TV runs through them really well.
take skirting off,
Score along lower 2" of plaster board
Break off lower 2" of plaster board
Place cable in new cavity in wall
Anyway I use power line adapters here and they are great and will do up to 200 meg.
Remember fiber is a LOT thinner ;)
I also have a couple of 1gB fiber cards that are going on eBay soon :D