I have done a couple of on line courses through UWA Extension, in Western Australia, although most of the students seemed to be from USA. The course went for 6 weeks - 2 lessons per week, with assignments, links to further reading, posting samples on line for critique, you can ask and get answers to questions, then there was a "test" at the end. I found the course really good, although the critiques were often a bit "airy fairy" - not constructive enough for me.
you could try this link -
ed2go online course – Online adult & continuing education provider