In 1974 local government reforms became the catalyst for the introduction of a new police service structure, creating 43 separate forces under a new tripartite system...
^Brain, Timothy (2014). A History of Policing from 1974 The Turbulent Years, Oxford University Press, USA. BiggerBooks. ISBN 9780199218660 (revised Nov 2023)
^ (2012). A History of Policing in England and Wales from 1974Indigo. ISBN 9780199218660 (revised Apr 2017)