Ok thanks a lot guys for the advice so far...
I've got solwise 200mbs homeplugs, house is old from 1920's. I've got one of these connected to my Netgear router:
http://www.amazon.co.uk/Homeplug-AV-...5749035&sr=8-7
Then this connected to my PS3 and Sony TV:
http://www.amazon.co.uk/Desktop-LAN-..._bxgy_ce_img_b
Then another same homeplug connected to blu ray player.
I've also got a Western Digital HDD connected to my router.
Router model is Netgear WNR2000