During the Victorian period the link between Irish immigration, crime, and disorder in England was widely regarded by contemporary observers as axiomatic. In 1836 the Report on the State of the Irish Poor in Great Britain devoted four pages to the examination of Irish criminality, noting that “the Irish in the larger towns of Lancashire commit more crimes than an equal number of natives of the same places,” and in 1839 the Report of the Constabulary Commissioners observed that in the towns of South Lancashire, “when large bodies of Irish of less orderly habits, and far more prone to the use of violence in fits of intoxication settled permanently in these towns, the existing police force, which was sufficient to repress crime and disorders among a purely English population, has been found, under these altered circumstances, inadequate to the regular enforcement of the law.”
The belief that the Irish in England were the harbingers of crime was by no means novel. With the substantial increase in Irish immigration during the early Victorian period, the host society's widespread belief in the innate criminality of the Irish—and, more particularly, of the Irish poor—formed an integral component of the negative side of the Irish stereotype. Witness, for example, Thomas Carlyle's much-quoted view that “in his squalor and unreason, in his falsity and drunken violence” the Irishman constituted “the ready-made nucleus of degradation and disorder,” or Henry Mayhew's assertion that “as a body, moreover, the habitual criminals of London are said to be, in nine cases out of ten, ‘Irish Cockneys,’ that is, persons born of Irish parents in the Metropolis.”