Josef Davies-Coates, founder of United Diversity has kindly let us know his top places to learn green skills.
There are lots of good courses being run at 3 of my favourite places:
http://www.ragmans.co.uk/ (many, including the one I'm doing now run
Been told they do really great stuff at: http://www.agroforestry.co.uk/
In London there is: http://www.naturewise.org.uk
Graham Burnett does lots of courses too: http://www.spiralseed.co.uk/