A calamitous plot to kill the king, uncovered by Regency Spies (published by Pen & Sword this month) author Sue Wilkes… In the late 18th and early 19th centuries, places like Chalk Farm and Spa Fields in London were the scene of mass meetings of Radicals campaigning for parliamentary reform. Subscribe for just £12.95 –> In 1816, Henry Hunt, one of the most famous reform activists, was invited to speak at Spa Fields by a group called the Spencean Philanthropists, whose chief …