The same thing happened to a close friend, worked for a small buiness that went bankrupt. He had support from the citizens advice bureau and through them, ended up on the list of creditors. The assets of the business were sold and shared out amongst all the other people owed money. Everyone received a small percentage and barely worth the effort. But out of principle, you must throw your hat into the ring for what you are owed. Employees come higher uo the list than suppliers, but behind the tax man I think.