I work for a legal company in Essex and I am currently dealing with some of the claims. The cases are still ongoing, but we are expecting to have more information and possibly an outcome by the end of Jan 2009. It is, however, very likely that the cases will take longer then this, so please be patient! You will hear something as soon as the company dealing with your claim has any news for you!
I agree with Ethel. I claimed my own using the template letters on the Money Saving Expert website (link in Ethel's post) and got a refund shortly before they were put on hold.
My friend used a Company who started her claim at the same time, she has had no money back yet and they are charging her a fortune to do something that I did myself very easily.