Hi @chrisgeorge ,
If you’re in the UK and not using Shopify Payments, you would need to accept payments through an external terminal if you’re using a third-party gateway instead. No transaction fees would be charged by Shopify if this is the case, as you are not processing the payment via the POS system directly. You can enable this as an option in your POS settings.
Please let me know if you have further questions.
Kind regards,
Victor | Shopify Social Care