The industry publication, The Morning Advertiser, has useful insights as to how to achieve a five-star hygiene rating. So these are what the food inspectors are looking out for...
https://www.morningadvertiser.co.uk/Article/2017/08/25/How-to-get-a-five-star-food-hygiene-rating
Not often I agree with you, but you're bang on the money here.
Businesses have a legal obligation to improve on a no-star or one-star rating. Failure to do so can lead to closure.
Feeling OK after eating from a one-star place isn't necessarily the issue. It possibly means you've got a fully...