check out the Watchdog website (bbc.co.uk/watchdog)
They have investigated such companies. Basically, if you are desparate to sell, and even as little as 30% of your money back is enough so long as you have it quickly then go for it. If you want more than 50% of your house property, then these companies are not for you.
Ary.
-------------------------------------- ***Do not, I repeat Do NOT feed the Trolls! *** *** All Hail the mighty hamsters! ***
I would err on the side of caution, the companies that Watchdog feature offer to buy at a lot less than market value. If you are getting desperate, drop the asking price yourself.