What did Baroness Louise Casey’s audit find about data and ethnicity in grooming gang cases?

Checked on January 2, 2026
Disclaimer: Factually can make mistakes. Please verify important information or breaking news. Learn more.

Executive summary

Baroness Louise Casey’s rapid national audit found that police and agency recording of perpetrators’ ethnicity in group-based child sexual exploitation (“grooming gang”) cases was seriously deficient: ethnicity was not recorded for roughly two‑thirds of alleged perpetrators nationally, making national-level statements about offender ethnicity unreliable [1][2]. Where local data was better recorded — notably in Greater Manchester, South Yorkshire and West Yorkshire — Casey observed a disproportionate representation of men of South Asian or Pakistani heritage among perpetrators in those areas, but stressed those local patterns cannot be extrapolated nationally because of the widespread gaps in recording [3][4].

1. The headline: missing ethnicity data undermines national conclusions

The audit’s clearest and most repeatedly stated finding was that ethnicity information is “shied away from” or “half‑collected”: police systems did not record ethnicity for about two‑thirds of suspects in group‑based child sexual exploitation, a failure Casey and ministers said made it “not good enough to support any statements about the ethnicity of group‑based child sexual exploitation offenders at the national level” [1][2][4]. Government statements and multiple news outlets echoed that statistic and linked it to flawed public debate and policy uncertainty [1][5].

2. Local patterns where data exists — disproportionate representation noted

Casey’s audit flagged that in the areas with more complete recording — for example parts of Greater Manchester, South Yorkshire and West Yorkshire — data suggested a disproportionate number of perpetrators were men of Asian, particularly Pakistani, heritage, and she identified those local disproportionalities as real phenomena meriting explanation and action locally [3][6]. The report stopped short of asserting a national pattern because the national dataset was incomplete, a restraint she emphasized repeatedly [3][7].

3. How data gaps happened: systems, culture and deliberate omission

The audit described multiple causes for the poor data picture: incompatible police recording systems and culture, an institutional reluctance to examine ethnicity because of fears of appearing racist, and even instances of records being altered or obscured — Casey cited examples that undermined trust in existing files [5][8]. Reporting and commentary noted that such “half‑collected” or suppressed information fuelled both claims of cover‑up and claims that ethnicity‑based allegations were exaggerated [9][8].

4. Consequences: mistrust, competing narratives and stalled accountability

Casey argued that flawed and missing ethnicity data produced competing and sometimes misleading claims — by media, academics and politicians — which eroded public trust and hindered proper scrutiny of causes and institutional failings; the audit said this contributed to victims being dismissed and to decades of institutional denial in parts of the system [3][8]. Government and advocacy responses framed the data failures as one factor behind delayed or inadequate investigations and public confusion [10][11].

5. Concrete recommendations and immediate government response

The audit recommended mandatory, statutory collection of ethnicity and nationality for suspects in group‑based CSE and a review of historical records; the government accepted these measures and announced plans for a time‑limited national inquiry, improved data collection across all 43 forces, and a national criminal operation to revisit cold cases [5][11][12]. News coverage and official statements cited these reforms as attempts to replace “flawed data” with a reliable evidence base [5][2].

6. Limits of the audit and open questions that remain

While the audit is explicit about data failures and careful not to overclaim a national ethnicity pattern, it nevertheless notes local disproportionalities and calls for explanation; beyond the accepted recommendations, it remains for the forthcoming inquiry and improved recording to determine how much observed local disproportionality reflects real differences in offending, local policing practices, migration and demographic patterns, or recording biases — matters the audit itself could not settle without complete national data [3][6].

Want to dive deeper?
How will mandatory ethnicity and nationality recording for suspects be implemented across UK police forces and what safeguards will be used?
What did local inquiries (e.g., Rotherham, Rochdale) conclude about perpetrator ethnicity and institutional response, and how do those findings compare to Casey’s audit?
How have media narratives about 'Asian grooming gangs' shaped public policy and what role did data gaps play in amplifying or undermining those narratives?