I believe occupational therapy falls under an allied healthcare course, so, as of right now, if you were to attend university to study Philosophy, Ethics and Religion, or English Literature and earned a degree, you would also be allowed to attend university again if you were to study an allied healthcare course (occupational therapy) fully funded. If you are really unsure what to do, and you don't mind possibly spending 6 years at university, you could study BOTH a non-allied healthcare course (English lit, etc.) and an allied healthcare course (Occupational therapy). Bare in mind you won't just get a straight pass into OT just because you already went to university, you still need to meet entry requirements for it and will most likely need to get work experience etc. to get into occupational therapy. However, this opportunity may not always be here. By the time you graduate with English lit, etc. they may stop doing this. So bare that in mind.
I already completed 3 years on a sports course and have applied to study Physiotherapy for September 2021, but even though my degree is somewhat relevant, it's still incredibly difficult to get into. The biggest thing holding me back is lack of experience (specifically with working in NHS).
The flexibility is great, but I've essentially wasted 3/4 years and I am to spend another 3. If I was to go back in time I would study the relevant GCSEs and A-Levels, and attend physiotherapy right away.