Self assessment advice required

Using my girlfriends bank account to buy items to sell and then withdrawing money from Vinted/eBay sales too my own bank account and then sending the money to my girlfriends bank account?? Is their any problems with this when I do my self assessment? (The reason I keep my money in my girlfriends bank account is because I had a severe gambling addiction in the past)

Hi,

No, there are not.

Thank you.