Some universities do courses in Beginner's French/German/Etc. Although I think you might have to do another degree with it.
However, some uni's are only bothered with GCSE grades to carry onto uni. I know my university does (Kent). For example, I got in with my A-Level in French. But they also accepted anyone who just got an A at GCSE. You just follow slightly different modules in the first year to get to the same level.
Just have a look through some prospectusses. I'm pretty sure you can.
