I am doing a sign language course at a College in Shefffield, it runs 1 evening a week for 2 hours. I costs around £200-£300.
Year one Level one take 1 academic year (sept-June) to complete. Level 2 takes two years and after that you can be employed as a translater for deaf children in classrooms! Level 3 takes 3 years and is the final stage. After that you can do an interpriters course.
So it is entierly seperate from any course you have done before. You need no qualifications to take part! Hope this helps! PGFT