Just withdraw from paypal lol, it isn't a problem until you make it one or someone else does. Selling a virtual currency on a game is laughable, i tell people I'm a virtual drug dealer to simps who actually pay for that shit.
Inland Revenue here never asked questions, cause I never did anything that required them too.
Also another tip:
Any regular/recurring payments or any purchase that you can put on paypal, do that. Means less transactions going into your bank accounts, even less questions. Plus it feels good to know you're kinda getting shit for free.