Poor Paul. This comes as no surprise at all and my heart goes put to you. It is an outrage, not just because of the reasons you state but because it is the same in all their stores, this dreadful discriminatory policy towards the elderly and less able. It borders on the illegal and really should be investigated. As for their utterly useless checkouts.....simply pack at the till. They cannot stop you. I say this for those of us who are able to do so. What a nasty company this is isn't it. Stay away is my advice. To be honest I would rather pay more going elsewhere for civility and kindness. Oh, and of course freshness. Tip...stand your bags up in your trolley if you can before they start trying to beat the world checkout speed record and DO NOT let them harass you. If they do go slower.