In the UK at least, MA/MS degrees are largely autonomous from either PhD or BA programs. They indeed are predominantly coursework-based alongside a research com

In the UK at least, MA/MS degrees are largely autonomous from either PhD or BA programs. They indeed are predominantly coursework-based alongside a research component, but typically offer a part-time option that is entirely manageable alongside full-time work. It’s a very competitive market and quality varies wildly, but it’s often possible to do an MA there in a discipline you may not have studied as an undergraduate — I’ve known several people who, over their working life, picked up numerous post-graduate degrees in multiple disciplines (even for an international student, we’re talking about 5-6k per year part-time).