THE Cato Street Conspiracy — named after the meeting place where the conspirators met near Edgware Road in the West End of London — was an attempt to murder all the British Cabinet ministers and the prime minister Lord Liverpool in 1820. Most of its members were angered by the economic depression and political repression of the time and planned to assassinate the Cabinet, which on the night of February 23 was supposed to dine together in Lord Liverpool’s Grosvenor Square house. They would then seize key buildings, overthrow the government and establish a committee of public safety to oversee a radical revolution.