I've just done a search of The New Crusade and it doesn't seem that I've ever mentioned "Pragmaticus Mercurius" or "Prag". It was (and maybe still is) an High Tory ginger group within the Conservative Party of the UK. It at least still publishes some things, including a newsletter. I was a member in its early days and, if it still exists as a membership group, would be interested in rejoining. It is monarchist, Christian and pro-life and wishes to see the restoration of the Stuart Constitution under the House of Windsor, which I suppose makes it semi-Jacobite.
If anyone is interested, I have a few links that I'm not bright enough to figure out how to post. Drop a note in the combox with your email or email me directly and I'll forward the email they're in.