There are still some places left on the 'Introduction to Screenwriting' course that I teach for Birkbeck College.

If you live in London, or in commuting distance, the course is taught at the London School Of Economics; one evening a week, Tuesdays from 7 to 9.00 pm. There are 22 sessions beginning on Oct 4th and ending March 22. Final outcome is the development and completion of a short film.

I've been teaching this course for over fifteen years. Here's what one student from last year e-mailed me: " I have to say that I have done a few courses on screenwriting including Arista, I've written short films that have been produced and was commissioned to write a feature film and now I really wish I had had the opportunity to have done your course before. So far, it is the best I have ever done, really and makes me realize how little I know!"

This is the official link to sign up but (at time of writing) Birkbeck haven't yet got around to putting up my proper course outline:
Certificates and short courses: 2011/2012 entry: Screenwriting

If you're interested in reading it, please pm me - there's also a private website I use for teaching.