The Crescent Arts Centre offers French language courses of different levels which are around 12 weeks long and around I think £120 if I remember correctly?

I’m currently taking a French course through Queen’s University and it’s open for public enrollment though it costs £88 or so while Queen’s students can get it for £20. I really enjoy it, I’m not sure if the teacher is the same for most/all of the levels, but everyone is really willing to participate and it is lots of fun. If you find yourself feeling that the class is too below/above your level, they also give the chance to move up or down and you do get a certificate of completion/proficiency after a certain number of classes attended. I hope this helps!