A hacker named as W£ßRooT hacked 300+ UK websites and defaced them.
Few hacked sites:
http://www.creditsavings.org/
http://www.knowrealestate.org/
http://www.europecarsrental.org/
http://www.creditscoresfree.org/
http://www.lifetimeguarantee.co.uk/
http://www.besthealthypet.com/
http://www.dirtcheaplaptop.com/
Full List here:
http://pastebin.com/68e9D0GB