You have to have evidence if living/staying in the country you apply from. So if he's applying in UK, and he's not British, he will have proof he's there legally and some sort of address.
so obviously not liking chocolate and sugar in a breakfast cereal makes my life limited. Lol. Such a strange way to think, but if it's so important to you, good luck.
. I'd never eat granola, too much sugar, and adding chocolate is more stupid. My thinking has never limited my life, you obviously have no idea about me and in no position to judge.