I found this website last week, and I'm shocked at what we can claim. I had to pass it on.
All you have to do is fill in the questionairre (no names or addresses needed) and it'll tell you what you can claim. It's then up to you to go to your local council and claim it yourself.
Put it this way, I never knew we were entitled to housing benefit as we rent privately. It turns out we are elidgible, and it'll help us a great deal. I know there are others out there who rent privately, and I'd hate to think they didn't know either!
website here