If you genuinely believed you was taking part in a legitimate business transaction and did not know the goods were stolen, this is a valid defence. Proving this in Court however can be quite difficult which is why it is vital to speak to a solicitor as soon as you become aware you are under investigation for the handling of stolen goods. If you were in a situation where you felt forced to commit the crime due to fear of death or injury and you can prove this to the Court, this could also be a valid defence.