Yes you can! Simply take the items, along with your order number or dispatch note to any UK New Look store. They will process the refund directly to Klarna through the till, you should receive an email/notification from Klarna confirming the refund within an hour.
Please note: Once you have returned your items and a refund has been processed by the store, there is no need to register your items as returned on your Klarna app.
You can also return your items to our warehouse. See your returns options here.
For all Klarna FAQs, see here.