I would guess that maybe they would have to register with a county court if they had gone into liquidation,if this is the case,there will be names on the documents of share holders etc. legally you would have to register an interest in claiming what you are owed(i think?)but most of the time its '20p in the pound' sort of thing,depending on the amount of 'assets'they have? If it were me i would be a bit p***ed about it!