As part of a wider investigation, I've been opening up some the files from food inspections across the north of England.
The inspections are carried out in every council area and the findings lead to the scores which should be displayed prominently on every restaurant, cafe, work canteens and take-away as the Food Standards Agency explains: " The hygiene standards found at the time of inspection are rated on a scale. At the bottom of the scale is '0' – this means urgent improvement is required. At the top of the scale is '5' – this means the hygiene standards are very good."
But what diners and shoppers aren't told is what exactly led to the premises being zero rated and requiring urgent improvement.
There's just two premises rated zero in Richmondshire - the Sunrise take-away in Catterick and the Rupali Balti House in Leyburn.
You can read what the inspectors found there via the links below or explore the map for information in other areas - so far, Sunderland, Middlesbrough, Manchester, Carlisle and Leeds have been mapped.