Interagency cooperation may increase efficiency and cost-effectiveness in an era of resource austerity and increased workload for both the police and their partners. Yet the effect of a strategic police-security collaboration on routine operations across multiple sites is unknown. In a controlled experiment, we introduced an interagency collaboration between state and non-state guardianships to train stations across England. A mixed-methods approach, with multiple crime indicators and a survey administered with police officers and security partners, was applied through a series of before-and-after comparisons with staggered start dates to control for confounding variables. Crime recording, police proactivity and crisis intervention increased compared to controls. Security staff and officers valued collaboration and saw it as beneficial and efficient. The findings support police-private-security collaboration on crime and disorder, but more research with larger and more diverse samples and stricter control over rival explanations is needed.

中文翻译：

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警察与安全合作的日常化：英国火车站的前瞻性混合方法实验

在资源紧缩和警察及其合作伙伴工作量增加的时代，机构间合作可能会提高效率和成本效益。然而，战略性的警察与安全合作对跨多个地点的日常行动的影响尚不清楚。在一项对照实验中，我们在英格兰各地的火车站引入了国家和非国家监护机构之间的跨机构合作。采用混合方法，采用多种犯罪指标以及由警察和安全合作伙伴进行的调查，通过一系列交错开始日期的前后比较来控制混杂变量。与控制措施相比，犯罪记录、警察主动性和危机干预有所增加。安保人员和官员重视协作，认为协作有益且高效。这些发现支持警察与私人保安机构在犯罪和骚乱方面的合作，但需要进行更多研究，使用更大、更多样化的样本，并对竞争对手的解释进行更严格的控制。