Crystball, you said: "It might be the case that sales are ahead of expectations, but may not simply be that? If he was going to spend that much shares in his own company, then why didn't he do it when the price was still less than £2.00."
I don't think there was any chance for him to buy at those levels, they would have been in a closed period up to the results, and the price shot up so fast afterwards, that this has probably been the first opportunity to buy in those sort of volumes.
Somebody please correct me if I am wrong.