Whether working in a team or alone results in higher productivity has been extensively studied in many settings, often being a controversial issue. This is none more so than for the police. Whether single or double crewing enhances or diminishes police productivity remains a perennial, contentious debate, yet credible empirical evidence is scarce. This paper provides new, quasi-experimental evidence on the causal impact of crew size on officer performance. Rich administrative data show that a policy shift (known as the 'Banded Shift Pattern') increased double crewing by altering vehicle-to-officer allocation in response teams. Double crewing significantly enhances police performance through two primary mechanisms: it improves officer productivity and reduces officer injury risks by enhancing situational safety. A cost-benefit analysis demonstrates that the performance gains of double crewing outweigh its increased operational expenses, proving it can be an effective strategy for modern policing.

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28 September 2026     Paper Number CEPDP2213

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This CEP discussion paper is published under the centre's Crime programme.