I don't think all the staff at CoOp are rude, in fact most are polite but wear an air of long-suffering stoicism. I agree that it's not well run, on the whole, but it is adequately run most of the time. Not a ringing endorsement, I grant you, but not enough for me not to use it. If something is wrong - like a lack of people on the checkouts or a spillage - I ask a staff member to deal with it and it's always seen to. I like the ethos and values of the CoOp in all its guises so will continue to shop there. As for M and S - despite its '00s ads claiming its exceptionalism - it's just a supermarket, ultimately.