Citizenship and self-defined ethnic group are separate variables.
Crime and demographics
Compare official evidence without mixing incompatible populations, periods or outcomes.
Arrest ethnicity, prison nationality, foreign-national-offender returns and immigration routes answer different questions about different populations. This guide keeps the unit, date, denominator and missing data beside every figure.
Different populationsDifferent reference periodsNo inferred person-level links
Sources checked 2026-10-16
A prison snapshot includes remand and non-criminal detainees.
Arrests measure police activity, not all offending or court guilt.
What are you actually trying to measure?
The safest route is to select the event or population first. Each answer below goes to a page that keeps its own denominator and limitations attached.
Four numbers - Four different populations
These figures are displayed together for orientation, not to create a ratio between them. Read the unit and period on every card.
Arrests for notifiable offences
Year ending 31 March 2026 · England and Wales, excluding Derbyshire Constabulary
Includes 82,321 arrests with unknown ethnicity.Open ethnicity evidence →Foreign nationals in custody
Snapshot on 30 June 2026 · England and Wales
3,283 remand · 6,431 sentenced · 420 non-criminalOpen nationality evidence →Foreign national offender returns
Year ending 30 June 2026
12% higher than the preceding comparable period.Open FNO evidence →Detected small-boat arrivals
Year ending 30 June 2026
An arrival count - Not a count of suspects, defendants, convictions or prisoners.Open immigration evidence →Missing data must remain visible
Group percentages can look precise while excluding a large unknown category. CrimeRate keeps missingness beside the result rather than silently removing it.
Arrest ethnicity unknown
82,321 of 739,703 arrest records lacked a recorded ethnicity. Known-group shares use the smaller known-ethnicity denominator.
Court defendant ethnicity unknown
The published 2024 court series reports ethnicity as unknown for roughly one third of defendants, limiting direct group comparisons.
Prison nationality not recorded
These people remain in the total prison population but are neither assigned to the British nor foreign-national group.
Four labels that must not be substituted for one another
A person can have values in several of these systems at once, but one field does not reveal the others.
Ethnicity
A self-defined category used in Census and criminal-justice statistics. Recording completeness and category systems differ between police, courts and prisons.
Read ethnicity evidence →Nationality
Citizenship or nationality recorded by a prison, police force or immigration system. British citizens can belong to any ethnic group.
Read nationality evidence →Immigration status or route
An asylum claim, refugee status, visa route or detected arrival method. These fields are not systematically attached to published crime records.
Read immigration evidence →Criminal-justice status
Suspect, arrested person, defendant, convicted person, remand prisoner and sentenced prisoner describe different procedural stages.
Follow the justice stages ↓What each official series actually counts
| Evidence series | Unit counted | Time basis | Useful for | Not evidence of |
|---|---|---|---|---|
| Arrests by ethnicity | Recorded arrest occasions | Year ending 31 March 2026 | Patterns in police arrest activity | Conviction, unique offenders or all crime |
| Court outcomes by ethnicity | Defendants or outcomes, depending on table | Calendar year 2024 | Stage-specific court comparisons | Police contact or population offending rates |
| Prison nationality | People held on one snapshot date | 30 June 2026 | Custody composition on that date | Offences committed during 2026 |
| FNO returns | Returns meeting the Home Office definition | Year ending 30 June 2026 | Immigration-enforcement outcomes | The current foreign-national prison population |
| Detected small-boat arrivals | Detected arrivals | Year ending 30 June 2026 | Arrival-route trends | Crime, arrest, conviction or custody |
“People,” “events” and “decisions” are not interchangeable units. Reference periods also differ.
From an incident to custody: Each transition changes the population
No single dataset follows every person through this complete sequence.
Incident recorded
Police-recorded crime counts incidents and broad offence groups. Many incidents do not identify a suspect.
Arrest
An arrest is a use of police power, not a finding of guilt. One person can be arrested more than once.
Charge or prosecution
Charging and prosecution depend on evidence, public-interest decisions and the applicable legal system.
Conviction and sentence
Court tables count defined outcomes. Acquittals, discontinued cases and missing characteristics affect comparisons.
Custody snapshot
Who is in prison on one date reflects remand, sentence length, release and recall - Not only recent convictions.
No valid asylum-status-to-crime calculation exists in these releases
ONS states that it does not hold crime breakdowns by asylum-seeker or migrant status. Small-boat releases contain arrival route and nationality, but no linked offence history. Dividing an unrelated crime count by arrivals would manufacture a rate whose numerator and denominator describe different people.
Not published
- Crimes by asylum status
- Crimes by arrival route
- Linked national arrest histories
Common questions before using the figures
Can prison nationality counts be turned into crime rates?
No. The prison table is a stock count on one day. It combines remand, sentenced and non-criminal detainees, reflects sentence length, and has no matched population-at-risk denominator.
Why do arrest and conviction totals differ?
They represent different stages and periods. Not every arrest produces a charge, not every charge produces a conviction, and tables may count people, proceedings or outcomes differently.
Can nationality be used as a proxy for ethnicity?
No. Nationality concerns citizenship; ethnicity is a separate self-defined characteristic. The same nationality contains people from many ethnic groups.
Does a local police FOI answer the national question?
No. A force response can illuminate its own records, but definitions, missingness and systems may differ across forces. It should remain clearly labelled local evidence.
Open the official releases
CrimeRate’s figures above are transcribed from these sources and checked on 2026-10-16.
Each official source opens in a new browser tab.
Home Office arrestsYear ending 31 March 2026Open official source
Ethnicity and the CJSMinistry of Justice · 2024Open official source
Offender managementPrison population tablesOpen official source
Returns from the UKForeign national offender returnsOpen official source
Immigration detentionDetention leavers and offencesOpen official source
Irregular migrationDetected arrival routesOpen official source
ONS data-gap responseNationality and immigration statusOpen official source
West Yorkshire Police FOILocal definition-led evidenceOpen official source