Welcome to the QuickBooks family, Lee. QuickBooks Simple Start is considered the best plan for a sole trader who wants a professional setup.
This plan features full double-entry accounting, tracking VAT, and organizing your income and expenses into categories that make filing your Self-Assessment much easier. You'll also have the ability to send invoices to your customers and process their payments.
Additionally, you may refer to this article for a comparison of all the QuickBooks plans available.
If you have more questions and concerns, don't hesitate to reply here. We're here to help.