Arvon Foundation

They run 4 1/2 day courses across the UK at the various centres they run. All in gorgeous locations. The courses are intense but a great way to get into writing over a concentrated time with likeminded people. Normally a small group and two tutors. Here is a list of the screenwriting courses they run this year. They are pricy but they have a very generous bursary scheme for students, low income, and on benefits.