My VAT tax due appears £-10.08 (Negative??)

I appreciate you coming in with us today, Emile.

The negative VAT tax due indicates that your taxable purchases are greater than your taxable income. That said, you'll expect a refund from HMRC or the amounts will just be deducted on your next filing.

However, if the amount is incorrect, you can run the VAT Detail Report to review the transactions and make sure correct tax codes were applied. Here's how:

1. Go to Reports.
2. Under Manage VAT section, choose VAT Detail Report.
3. Start reviewing the transactions.

Once verified, proceed with submitting the VAT as usual via MTD. 

To learn more about QuickBooks Desktop VAT e-filing & Making Tax Digital, you can check out this guide.

Be sure to get back to me if you have other questions. I want this to be taken care of. Have a great day ahead!