Law enforcement broadly refers to any system by which some members of society act in an organized manner to promote adherence to the law by discovering and punishing persons who violate the rules and norms governing that society. Although the term may encompass entities such as courts and prisons, it is most frequently applied to those who directly engage in patrols or surveillance to dissuade and discover criminal activity, and those who investigate crimes and apprehend offenders. Furthermore, although law enforcement may be most concerned with the prevention and punishment of crimes, organizations exist to discourage a wide variety of non-criminal violations of rules and norms, effected through the imposition of less severe consequences.

Most law enforcement is conducted by some type of law enforcement agency, with the most typical agency fulfilling this role being the police. Societal investment in law enforcement through such organizations can be massive, both in terms of the resources invested in the activity, and in the number of people professionally engaged to perform those functions.

Jeff Allen (born Jeffrey Allen, 23 April 1946, Matlock, Derbyshire) is an English rock and blues session drummer. Allen is best known for his work with East of Eden, Babe Ruth, Snowy White, Bonnie Tyler, Mick Taylor and Van Morrison.

He is not to be confused, although in many listings often is, with the similarly named, former drummer with the British glam rock outfit, Hello, whose brother is Ultravox's Chris Cross.

Allen became the drummer with the Glasgow based band, The Beatstalkers, who played residencies at the Marquee Club in London, and the Frankfurt and Cologne 'Storeyville' clubs.

Allen joined East of Eden in 1971, and his percussion work appeared on five of their albums in the 1970s.

In the early 1980s, working as a freelance session musician, Allen played on albums recorded by Bonnie Tyler (Goodbye to the Island), Murray Head (Voices) and John Martyn (Well Kept Secret). In 1986, Allen joined Snowy White's Blues Agency, and drummed on their 1988 album, Change My Life.

In 1995 Allen teamed up with both Mick Taylor and Snowy White for their live album, Arthur's Club-Geneve 1995.