Age has nothing to do with A levels, or any other education for that matter. If you need to get A levels - go and get them, regardless if you're 16, 36 or 66.
Hi there you are never too old for education. I didn't have any A levels for my current course and took a foundation year with ARU College. Have you looked into access courses as well as A Levels are not the only route into the degree you want to do. I would check with the university you want to attend and find out what ways they will accept to get you on the course.