Current SGU student here (on the island)... I know some 2nd years that did the 1st year in the UK. From what I hear- there's no US federal aid for that first year in the UK route, so if it's true and you are rich and aren't taking out US loans, go for it. otherwise, it'll cost you a hefty check or do private loans (wouldn't recommend). I've heard the professors are a lot better in the UK compared to the island, so that can be a plus. Otherwise, i'd say just go to Grenada. It's not like you have all this time to explore london/europe on the weekends anyways.