I feel like I keep posting this but have a look at Liverpools foundation year, it has by far the lowest entry requirements of all the access courses (5 A grades GCSE'S) along side work experience.
In terms of applicants to places ratio last year it was the same as for d100 this year places are increasing from 5 -12 so odds should improve.
Deadline for this year is next month, so assuming you qualify you could apply for the foundation course and still have time to sign up for A levels in September if you dont get in.