Hi there, Brooke.
Welcome to the Community page.
I'm here to make sure that you can sign up for QuickBooks Online (QBO) UK.
QBO is compliant with the rules, regulations, tax policies per country depending on where you signed up for. I suggest you create a UK dummy address to go through the process.
Feel free to use this link for more details: Get started and adjust settings after you sign up for QuickBooks Online.
I've added an article as your reference when you need help in changing your billing info in the future: How to update your subscription and billing details.
Don't hesitate to get back to me if you have any questions concerning the issue. I'll be right here for you.
