Is there a solution that lets me pay customers via quickbooks that works in the UK

Let's find a solution or a third-party app that works best with QuickBooks Online (QBO) that lets you pay your customers, @simone10.

There are lots of apps that work perfectly with QuickBooks Online. You can check our QuickBooks Apps store and browse for an app from there. 

In the meantime, here's how you can record customer payments manually in QuickBooks: Record invoice payments in QuickBooks Online. 

I'm always here if you need more help with looking for the app that lets you pay your customers. Take care, and have a wonderful day!

@simone10 

Do you mean to pay customers or pay suppliers/vendors?