There are some good organic gardening courses in Cumbria - although they tend to have a vegetable bias. Growing Well is an innovative organic growing and training company based at Low Sizergh Barn on the outskirts of Kendal. It run various one day courses throughout the year (except winter).
If you need a more flexible way of learning, MyGardenSchool is available to you for virtual learning, and brings your some of the best gardening teachers in the world.