Although my house is only 5 yrs old the original owners/builders couldnt see the point of installing ethernet cabling (grrrr). I've been making do with Homeplug/Powerline devices but my networking requirements have now outgrown this type of solution.

I'm not necessarily looking for the whole smart-cabling enchilada, but would be open to it if the price was reasonable. At a minimum I just need 4 cables (2 in two rooms) run to another room without destroying the walls.

Does anyone know of a reputable installer who can do a nice tidy retro-fit?