I was initially pleased when I went to the "book a slot with a shipping expert" page and it automatically offered me times based on London/GMT .. hey, these guys know what they are doing, they recognise that there is a world outside the USA!
Anyway, I set up my Magento AP credentials, and due to the way our store routes requests and re-routes certain queries based on their GeoIP etc it took a few hours to get it going, as some of the internal SOAP calls were getting messed up ... no worries, 3 or4 hours of effort would be worth it to get a label printing solution hooked up between Magento and UPS ...
Finally I get it to work .. and ... the next page will NOT let me get any further as the address fields are USA based, and "USPS cannot verify my address"
Please let me know how to set up with a UK based store address ...