The Difference Between Substantial Food and Snacks

The legal distinction between substantial food versus snacks came roaring back to relevancy in the UK during the early COVID pandemic. The justification being that even in a mass outbreak of highly infectious disease, people still gotta eat. A scotch egg is a soft boiled egg covered in a thick layer of sausage, then breaded and deep fried? If a scotch Egg is a snack to you, then you've either gotta be a Dickensian coal miner or you probably just eat way too many calories.