Could you eat food where flies have been on, like a party or so?!
Answers: and what are the consequences of eating food where flies have been on in England. How damaging could it be to your health?
Every time a fly lands on a potential food source it vomits. This makes it easier for it by "predigesting" the food.
So...it all depends what the fly has been eating before; tasty dog or cat poo, yummy rotten fish, delicious sewage - the prospects, even in Britain, are pretty nasty.
On the whole, I would say don't eat!
nothing. you'll live