Update README.md

README.md

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 ---
 license: cc-by-4.0
+language:
+  - en
+tags:
+  - police
+  - criminal-justice
+  - open-data
+  - united-kingdom
+  - united-states
+  - australia
+pretty_name: Police accountability data (UK, US, Australia)
+size_categories:
+  - n<1K
 ---
+
+# Police accountability data: United Kingdom, United States and Australia
+
+Nine derived, machine-readable tables on police complaints, stop and search, and deaths following
+police contact. 728 rows. Every figure is computed from official open data by code and published
+with its source, its period and its denominator attached. **No figure was written, estimated or
+rounded by a language model.**
+
+- **Documentation and downloads:** https://www.policecomplaint.com/data/
+- **Column reference (data dictionary):** https://police-accountability-data.readthedocs.io/
+- **Usage handbook, which calculations are wrong:** https://copious-co.gitbook.io/copious.co-docs
+- **Source repository:** https://github.com/copious-git/police-accountability-data
+- **Cite the concept DOI:** https://doi.org/10.5281/zenodo.22165476
+
+## Read this before you use it
+
+- **A disparity ratio is a measured difference in outcomes.** It is not proof that anyone acted
+  unlawfully and it does not establish a cause.
+- **A recorded complaint is an allegation, not a finding.** A force that records complaints readily
+  logs more of them.
+- **The UK ethnicity figures use two different bases.** Searches carry *officer-defined* ethnicity;
+  Census denominators are *self-defined*. People recorded as Mixed are 0.5% of searches against
+  2.9% of residents, a gap too large to be real. Treat the direction as solid and the magnitude as
+  uncertain.
+- **Every rate ships with its own numerator and denominator.** Dividing by the row total instead
+  understates the rate on 21 of 41 forces, by up to 24.5 percentage points.
+
+## Contents
+
+| File | Rows | One row is |
+|---|---|---|
+| `uk/stop-and-search-outcomes-by-force.csv` | 44 | one police force |
+| `uk/stop-search-ethnic-disparity-by-force.csv` | 205 | one force, one ethnic group |
+| `uk/stop-search-ethnic-disparity-national.csv` | 5 | one ethnic group, England and Wales |
+| `uk/complaint-review-outcomes-by-force.csv` | 44 | one force |
+| `uk/deaths-following-police-contact-by-year.csv` | 21 | one financial year |
+| `uk/deaths-following-police-contact-by-category.csv` | 6 | one IOPC category, plus a TOTAL row |
+| `us/police-killings-by-state.csv` | 51 | one state, including DC |
+| `us/police-killings-by-agency.csv` | 208 | one department |
+| `australia/complaints-and-deaths-in-custody-by-state.csv` | 144 | one state, one year |
+
+## Headline figures
+
+**United Kingdom.** 1,397,874 recorded stop and searches across 41 of 44 forces. Nationally, Black
+people accounted for 18.2% of searches with a recorded ethnicity against 4.0% of residents, a ratio
+of 4.5, over 1,151,285 searches in 36 publishable forces. 24.5% of completed complaint reviews found
+the force's own handling was not reasonable and proportionate. 3,666 deaths during or following
+police contact, 2004/05 to 2024/25.
+
+**United States.** 15,550 people killed by police 2013 to 2026. 267 cases (1.7%) led to a charge,
+91 to a conviction or guilty plea, 40 to an acquittal.
+
+**Australia.** Complaints per 100,000 people in 2024-25 ranged from 6.3 in Victoria to 97.6 in the
+Northern Territory. 445 deaths in police custody, 93 of a person recorded as Aboriginal or Torres
+Strait Islander.
+
+## Coverage gaps, which are real
+
+Greater Manchester, Gwent and British Transport Police publish no stop-and-search data at all.
+Five further forces record ethnicity on too few searches to support a ratio and are marked
+`publishable=false` with the reason. Scotland and Northern Ireland are absent because Police
+Scotland and the PSNI do not report into these datasets. Ireland has no dataset: we checked all
+12,985 Central Statistics Office tables.
+
+## Sources and licences
+
+data.police.uk, the Independent Office for Police Conduct, the Home Office and the Office for
+National Statistics under the Open Government Licence v3.0; the Productivity Commission's Report on
+Government Services 2026 under CC BY 4.0; Mapping Police Violence under the publisher's own terms;
+US Census Bureau population estimates in the public domain. Only aggregates are redistributed; no
+source's record-level data is republished.
+
+## Who publishes this
+
+Copious Ltd (England and Wales, company no. 11437826), which publishes
+[PoliceComplaint.com](https://www.policecomplaint.com/) and also operates a claims referral service.
+The data is published openly under CC BY 4.0 regardless.