I don’t need to write silly dev down as business expenses? I pay my taxes over every bit of income I receive. As for Gamer, I apologize, I was wrong. In the UK Underage people are allowed to own a company without listing it as any type of company. So for gamer, as his income is less than 12570 GBP a year he gets the “tax-free allowance” on his earnings. Any gross income over 100gbp will be handled automatically through their legal guardians.
I myself am Dutch, so I wasn’t fully aware of the uk laws