Had a reply from Barclaycard regarding my 1998-2003 SAR request.   They claim not to be able to find my statements and need more information. I provided them with my name and the address the cards were registered to at the time.   Interestingly Barclaycard claim that the statements are not in their main system, but they state that they do have them. In order to retrieve the statements they need my old card account numbers. Alas I don't have these anymore.