The Economics Policy Working Group of the Green Party in England has so far been the only one to formulate a monetary policy that would actually make a difference.
Brian Leslie edits Sustainable Economics as their newsletter. Its web edition can be found on
Roy Davies in Exeter has written a comprehensive and in-depth History of Money which is on http://www.ex.ac.uk/~RDavies/homepage.html
James Gibb Stuart wrote The Money Bomb and other documents that can be found on http://www.ossianbooks.co.uk/show.php?item=MONB
He also sponsors the Bromsgrove Group which publishes Prosperity as a newsletter and meets once a year.