The company director involved has owned up, resigned and offered the money personally (a classic move by dodgy dealers)
To quote mumsnet:
"Posted here on mumsnet only 28/01/2012 By Richard Grace ex-director of Garden Structures Ltd. Now resigned (subject to any forum moderation rules).
The company Garden Structures Ltd (now ceased trading) owed the De-Rivas family £15,000 which was paid to the above company the agreed deposit for building a special room for their 2 autistic children to have a better life. I as an individual intend to re-imburse the De-Rivas family, in full and as soon as I can. There are no other creditors involved in this matter.
Here below is my personal and public promise to repay the £15,000, which I have the ability to achieve. Unfortunately this cannot be achieved quickly but I can and will do this."