My sister and I assume that Somerfield must have some sort of criteria like this. In my local (very small) branch, there is a guy with one leg, one who is very deaf, and several with learning difficulties. They all seem to do a good job though. My sister has tried to get a job there without success. My postman also says that you only stand a chance of getting a job with the Royal Mail now if English is your second or third language and preferably that you can't read.