a former army general, was appointed Commissioner of the Metropolitan Police in 1886.He gained a reputation for using the army to boost police numbers and for using aggressive policing methods against working-class political demonstrations, such as “Bloody Sunday” in 1887. Warren had a poor relationship with the Home Secretary, Henry Matthews, and, after the failure of the Ripper investigation in 1888, was forced to resign. Warren wrote to the press to blame much of the failure of the Ripper investigation on weak political leadership.