Hi @josephcura ,
I can definitely see the pain of having to run multiple stores. Are you using Shopify Payments (SP) as your payment gateway? SP is available in both the US and the UK.
I’m wondering if the Geolocation app could help you out here. To use the Geolocation app, you must sell in multiple languages and/or in multiple currencies. The Geolocation app offers recommendations only for the languages and/or currencies that you have enabled. You can read more about it here and here. I’m also wondering if the locations feature could be of use to you too! Could any of the above features make the process easier for you do you think?