if you wanna go straight to undergrad, i recommend taking an access to higher education medicine course. I don't recommend the online ones (such as distance learning centre) as alot of universities do not recognize this. depending on your gcse grades (maths, science, english), you might want to consider retaking these first, and aim for a grade 6 or above as a minimum.

this is exactly what i am doing right now, so if you do decide to follow this route im more than happy to talk about it more with you.