Studying in the UK is a good goal. Are there any particular areas in the UK that you’re interested in?
I think A-Levels is a good pre-U course to further your studies in the UK because its examination board is based there. A-Levels is useful if you’re planning to study in the UK and Commonwealth countries like Australia and Canada. Plus, it can help you if you’re still undecided about what field to pursue since you can choose your subjects. It’s also less restrictive than, say, foundation courses at certain universities and area-specific pre-U courses.
However, do note that your progress is entirely 100% exam based. So, it’ll be a bit like going back to school where your grades are determined by your finals. Although you’ll only have to choose 3-4 subjects to take in A-Levels, it is said to be quite challenging due to its analyse and apply concept.
Nonetheless, it’s still a good pre-U option. I find this page and website to be very useful in researching about post-SPM options since I myself will be starting pre-U next year. I wish you all the best for your SPM next year and your post-SPM education!