Advice on entry to a medical degree with little/no formal qualifications

Any advice on this would be hugely appreciated as i'm struggling to draw any meaningful conclusions from what i can find online already-

Basically, a chronic illness caused me to spend the majority of my years as a teenager/young adult in hospital. I was unable to take my GCSEs and didn't study for A levels at all. I'm just now (age 23) on the mend and have been giving a lot of thought to what i want to do with my life now that i'm not permanently tethered to a hospital bed. To the surprise of all who know me, i want to go back, but hopefully as a doctor this time. i received nothing but exemplary care while i was sick, i wouldn't be alive today if not for the NHS, and it would be an honour to one day provide that care for others.

I know it's not going to be easy. I know people with perfect school records still get rejected and i know it'll be a hard battle convincing universities that i'm a better candidate than those people, but i'm ready for the challenge. Before getting sick i was at an amazing school on an academic scholarship and was predicted mostly A*'s and A's at GCSE so academically i think i should be up to it, i'm just really unsure as to what route i should take as even access to medicine courses require GCSE's and i have none. Would i be better off studying both my GCSE's and A levels at a college or would universities view that as strange to do so late in life? is an access course a better option? i've seen, for example, KCL require 39 distinctions in an access course for a 'typical offer' but to get an offer at all seems like a bit of a lottery. I'm prepared to jump through whatever hoops necessary to give me the best chance at successfully getting into a medical degree, i just need some help figuring out what my best path to take would be?
thankyou in advance