Waitrose picked up the best customer service awards for the sixth year in a row.

The Grocer’s weekly mystery shopping competition moved to a new format this year, which pits shops in the same town or region against each other (plus a handful of special themed shops). This meant Waitrose did not feature as frequently as other retailers because, for example, it doesn’t have any full-sized stores in the Lake District, Leicester, Newcastle, or South Shields.