“If you are sure that there was an agreement between Mr Cutler and Mr Wilson which had the effect of defrauding Costain, but one defendant may have been acting honestly and you are sure that the other was dishonest, it is possible to find one defendant guilty and the other not guilty.”
“What would not be enough is an agreement to process invoices if one party thought that was entirely legitimate” (at 75D). The judge then redirected the jury as follows: “If the agreement between Mr Cutler and Mr Wilson was to use false invoices to enable Costain to use a different budget to pay for entertainment, then both are not guilty because in those circumstances there would be no conspiracy to defraud, irrespective of the fact that Mr Wilson knew the true reason. If the agreement between Mr Cutler and Mr Wilson was to use false invoices in order to take money from Costain, then there would be a conspiracy to defraud. If there was a conspiracy to defraud, the jury must decide in the case of each defendant whether he was being dishonest.”