Katkins you've posted quite a lot about frustrations & difficulties with your UG course. You seem to have quite extreme swings of feeling about your course & studies. I think a year out of formal education (at least), and in the work place would be a very good thing.
From what you've said in here, I'm pretty sure I know where you are (indeed, I suspect I taught at least one of your tutors). If it's I think it is, it's not in my opinion the place to do a PhD if you want an academic job afterwards. It isn't research-active in its institutional profile, although a couple of the people teaching you are individually good (others are dire, but that's another thread). And if an institution isn't properly research active, it's actually difficult to develop a research culture for staff and research PGs. How many of the books for your courses are written by the people teaching you very day? Because at all the places I've taught, our students are engaging with the people who've written the books ... But in post-92 universities, this is much rarer. It doesn't mean you're not being taught well, by good people, just that there's no sustained & developmental research culture. Unfortunately, turning polys into universities actually destroyed what polys were good at, but didn't fund them to be proper universities.
And re creative practice: I'm afraid contrary to Sparklyboots' advice, I've worked in places where Departments have employed part-time or hourly-paid creative practitioners. The people in demand were experienced, had quite a long careers of professional practice, their own theatre companies, for example, drawing in Arts Council funding, or they'd earned their livings as practitioners, not simply fresh out of an UG course. Which suggests another reason for spending some time earning your living before you go on to an MA and PhD.
And at RG universities where I've worked/am working I'm afraid we rarely award funding (either AHRC or equivalent University studentships) to someone already registered in a PhD. At one institution, we were also pretty tough about part-time PhD enrolment. It was discouraged in the first year, and a candidate really needed to show how they would make the real time available to pursue a PhD. This is a tough policy, but I could see the rationale: self-funded PhDs are the worst for completion rates. Now the Research Councils have an unrealistic aim of all PhDs completed in 3 years (I think they really need 4 years)
The thing is, a PhD is nothing like undergrad study. Really nothing like it. Which is why doing an MA is a good stepping stone. And if you can upgrade your UG qualification by doing an MA at a research-intensive university, you'll stand a better chance of successful PhD study. And you'll get a better sense of what the research world is actually like.