Cato Street Conspiracy, 1820
nThe Peterloo Massacre in Manchester increased the amount of anger that many radicals felt towards the government.
nAt one meeting a spy reported that Arthur Thistlewood said: "High Treason was committed against the people at Manchester. I resolved that the lives of the instigators of massacre should atone for the souls of murdered innocents."
n27 conspirators planned to assassinate key members of the cabinet when they met at Lord Harrowby's for dinner on 22 February 1820.
Threat Level?
Low: Indirect
High: Direct
Lord Castlereagh was one of the targets for the assassination attempt. He has pushed the Six Acts through parliament