If you’re into science fiction, and looking for an outlet for some non-fiction, you might like to consider Vector, the critical journal of the British Science Fiction Association (BSFA). When I first decided to actually write rather than dream, I approached Vector who just want good writing, not reputation.
In the years since, I’ve done a handful of reviews and (almost) every year produce a feature on audio drama in review. Why not submit something? Here’s the link: Submit.