I'm a fan of Waitrose, too, though I have plenty of alternatives. Staff at Tesco are mostly quite nice, but the service just isn't the same. Maybe it's because at Tesco they seem to do it because that's their job, and at Waitrose they actually seem to want to help? (They are partners, not employees, after all! ) And apparently Waitrose will lend you a fish kettle if you want one - not that I've ever had need of one myself.