Richard Heslop, EdD, is a sergeant in the BritishPolice where he has served for 23 years. Dr Heslop's academic work crosses disciplinary boundaries and he holds a BSc degree in sociology, an MA degree in political science, and a Doctorate in education. His main research interests centre on police training and professionalisation and he has had numerous articles published in leading policing journals. The views expressed in this article are those of the author and not those of the British police. ABSTRACT This article argues that there are two contrasting models for understanding developments in contemporary British policing. The first, which is an intended outcome of the reform and 'workforce modernisation' agenda, envisages increased professionalisation. The second, which is a perverse outcome of that same agenda, is the 'McDonaldization' of the British police. This article prefers the latter and argues that policing is increasingly becoming McDonaldized. According to the sociologist George Ritzer, McDonaldized institutions operate in accordance with four main principles: calculability, efficiency, predictability and control. Taken together, these four factors can be understood as the basic components of a rational system. However, the main problem with McDonaldized systems and a fifth characteristic of the process is the production of irrationalities (or what Ritzer terms the 'irrationality of rationality'). A primary purpose of this article is to highlight some of the irrationalities of McPolicing.