I am wondering how I can print a preview of the invoice to see if it prints ok or if I need to make adjustments

Greetings, @wes-wgd,

I can give you the steps on how to preview invoices before printing in QuickBooks Online United Kingdom.

Here's how:

1. Open the invoice you want to view.
2. Click on Print or Preview twice.
   
3. This will route you to the PDF window.

You can also preview invoices by batch. Here's how:

1. Go to the Sales or Invoicing menu.
2. Tap the Invoices tab.
3. Click the Batch actions button.
4. Choose Print invoices.
   

Please check out these articles to learn more about printing sales forms:

How to print sales forms

How to email or print an invoice

Email or print multiple invoices and sales forms

Please update me if you have any questions with the steps. I'm just a post away to help you. Have a great day!