biomedical science or English lit at uni?

Look at degrees like Neuroscience, Psychology, Pharmacology, Pharmacy, or Natural Sciences (multi-disciplinary science program) - or from another angle, what sort of professional roles in the NHS might interest you https://www.healthcareers.nhs.uk/explore-roles/explore-roles

Go to some Uni Open Days in May/June and sign up for a wide range of subject talks - what are these subjects about at degree level, and what jobs have previous graduates gone on to do?

Or for the Humanities . Social Sciences route - do any of these degrees sound interesting : https://www.sussex.ac.uk/study/undergraduate/
Many subjects do not require specific A level subjects, just grades, others may just want an 'essay based subject' etc.
Again, Open Day talks will open up more of what these degree subjects are all about and what you can do with them.

Maybe you should research more about these two courses and create a table of pros and cons! At the end of the day, choose a subject you know you can excel at with the skills you possess at the moment OR a subject you don't necessarily have all the skills for but you're willing to put in that little extra effort to achieve them! If all else fails, follow your intuition, ask yourself which course makes you feel more excited when you think/talk about it? It's probably that one that you should consider doing.

Good luck!!