No. You will struggle to find a college that will take you for A-levels. Mainly because the systems are not in place for mature students to do A-levels. If your a mature student your expected to do an access course instead.
You do get funding for an access course but alot of the access courses are mainly targeted at the health professions. E.g access to nursing, health sciences, midwifery etc.
Although thier are access to computing courses available.
If there isn't you would probably be best to do an access to science course.
Although an access to science course isn't necessarily relevant to computing it will still get you enough UCAS points for entry.
Also if you did manage to take a levels you would have to take 3 a levels as one a level will not get you enough UCAS points.