Webflow does not provide multi-language support at this time. You can choose to rely on a third party integration that bridges the gap.
@webdev USA and UK. Why do you think this will help when they are both English speaking countries?
Sorry, in that case it would not.
You could dedicate a field in the blog to contain the content for the UK, then use an external geo-ip to hide the default field and display the UK field when it is a match. It is not a good approach for SEO as the content while hidden would still be loaded with the page.