There are actually a lot of courses you can take with your A-Levels if you are willing to include foundation year courses as well.
If you did want to do a criminology degree, you could take an EPQ and center it towards criminology to prepare you for that degree. As long as your personal statement fits the subject when you do apply for degrees, you will be fine, please note that universities will also see your GCSE grades and subjects which may aid in making offers.