"I have reached the conclusion that there is no satisfactory excuse and I'm sorry to say that I do not accept that I've had a full and honest explanation from the Claimant. His primary case that he believed it was the 15th November I reject. I am left, because he has not been full and honest, trying to decide whether it was the 13th or the 14th that he really believed. That is no basis on which to exercise a discretion in his favour."