I went to a Steve gosling seminar at Leeds uni not so long back (organised by a forum member), was very interesting to listen the thought process in his landscape stuff.
I see a groupon offer now and then for a Tom Poultney landscape workshop at Bolton abbey, I almost bought one last time but just missed out.
After the seminar with Steve, he mentioned he was going to be running a workshop with joe Cornish sometime (not sure when). I guess the details will be on Steve goslings website......
If you do find one you like the look of, let me know as I'd also like to attend one.
Rich.