Hi Rachel. I'm not sure how it works specifically for your topic but for social science the process is to develop your idea for the PhD as much as possible, then research potential supervisors. In the UK the "who" is as much - if not more - important than the
"where". Seek out professors who supervise in your domain, send them your proposal and take it from there. You'll get some immediate "no, I wouldn't supervise this", and some interested parties, at which point you can start to narrow down which institution/s you apply to. (And then, having secured your place, the institution will guide you as to what sources of funding are available).

Good luck