Identify the supplier and the supply
Add your business identity and address, customer details, unique invoice number, description, supply date, invoice date and amounts. GOV.UK explains additional identity requirements for sole traders and limited companies.
Review VAT separately
GBP and a VAT label are convenience defaults, not a decision that VAT applies. Add registration details and an applicable rate only where appropriate. This workspace uses one tax rate for the whole discounted subtotal.
State the payment date clearly
Use the deadline agreed with the customer and verified payment instructions. Include the invoice number as the payment reference. The PDF does not collect payment or submit a tax return.