What counts as a deportation in UK statistics?

In law, deportation is removal on criminal or public-good grounds only. Most people who leave under immigration enforcement are administratively removed or depart voluntarily, so official statistics count "returns" instead. The Home Office headline is enforced returns plus voluntary returns: 39,371 in 2025 (9,912 enforced, 29,459 voluntary). People refused entry at port and subsequently departed (18,308 in 2025) are always a separate series. This site uses the Home Office definitions throughout.

Why do figures differ between sources?

Usually one of four reasons: different definitions (some outlets add port refusals to returns, which mixes two processes), different periods (calendar year versus year ending a quarter versus financial year), different vintages (Home Office series are revised at every quarterly release, and voluntary returns revise upward as more departures are verified), or stocks confused with flows (people in prison or hotels at a point in time versus returns over a year). Every figure on this site names its definition, period and publication.

How often does the data on this site update?

On the cadence of the official releases: small boat arrivals daily, the news digest and release calendar weekly, and the main Home Office Immigration System Statistics quarterly (February, May, August and November), which refresh returns, FNO, asylum, detention and accommodation data. MoJ tribunal and prison statistics are also quarterly; ONS net migration estimates arrive twice a year. Dates are tracked on the release calendar at /releases/.

Methodology & Definitions

What every term on this site means, exactly as the Home Office defines it; how the data pipeline works; how figures are revised; and how to cite a page. Datasets are downloadable from Get the Data.

The headline basis: "returns" on this site means enforced returns plus voluntary returns, the Home Office headline definition. In 2025 that is 39,371 returns (9,912 enforced, 29,459 voluntary). The 18,308 people refused entry at port and subsequently departed are a separate series and are never added to the headline.

Definitions

Each term below follows the published Home Office (or MoJ/ONS) definition. Anchor links are stable: cite a definition as https://www.deported.co.uk/methodology/#definitions.

Returns (the headline)

A return is a person leaving the UK who had no legal right to remain, or who was subject to enforcement action. The headline returns figure is enforced returns plus voluntary returns. That is the Home Office's own headline measure, and it is the only basis used for headline figures on this site. For 2025: 9,912 enforced plus 29,459 voluntary equals 39,371.

Enforced returns vs enforced removals

An enforced return is any departure the Home Office enforces: the person declined to leave voluntarily and their departure was carried out or directly supervised by Immigration Enforcement, including people who leave the UK from immigration detention. Enforced removals, where the person is physically removed (usually under escort), are a subset of enforced returns. Where a table on this site says "enforced", it uses the published enforced returns series unless the table itself says otherwise.

Voluntary returns

Voluntary returns are departures by people with no right to remain who leave without being escorted. The Home Office publishes three subtypes: assisted returns (departure supported by the Voluntary Returns Service, sometimes with financial support), controlled returns (the person notifies the Home Office and departure is confirmed at the border), and other verified returns (departures identified afterwards, mainly by matching exit records). Because other-verified returns are found through later data matching, recent quarters are always undercounted at first publication and revise upward at subsequent releases. Voluntary return totals for the most recent quarters should be read as minimums.

Port refusals

"Refused entry at port and subsequently departed" counts people turned away at the border who then left. It is a different process from removing someone who was living in the UK, so the Home Office publishes it as a separate series and this site never adds it to the returns headline. Adding it would give 57,679 for 2025, a number that mixes two processes and is not comparable with the headline series over time.

FNO returns

Foreign national offender (FNO) returns count people subject to deportation action following a criminal conviction who were returned, across all return types (enforced and voluntary). They are a subset of total returns, not an additional series: the 5,683 FNO returns in 2025 are inside the 39,371 headline. The foreign national prison population is a separate point-in-time snapshot from MoJ and cannot be divided by FNO returns to make a "removal rate".

Small boats daily data

Daily small boat figures are provisional operational data: counts of people detected crossing the Channel in small boats, published the following day from live systems. They are consolidated and finalised in the quarterly Immigration System Statistics, and individual days can be revised in between. The daily tracker on this site always shows the latest operational figures; annual totals in tables use the finalised series once published.

Asylum backlog bases

"Backlog" is used loosely elsewhere; this site separates the bases. Asylum work in progress can be counted as cases (one application, possibly covering several people) or as people (main applicants plus dependants); the two differ by roughly a third. It also splits by stage: awaiting an initial decision (a Home Office count) is not the same population as appeals outstanding (a tribunal count, after an initial refusal). Every backlog figure on this site names its basis (cases or people) and its stage.

Tribunal open caseload vs asylum appeals pending

The First-tier Tribunal (Immigration and Asylum Chamber) open caseload counts every live appeal of any type: asylum and protection, human rights, EU Settlement Scheme, deprivation of citizenship and others. Asylum appeals pending is the asylum-and-protection subset. The two are published in the same MoJ quarterly release and this site always labels which one a figure uses.

Net migration

Net migration figures are ONS long-term international migration estimates: immigration minus emigration of people changing their country of residence for 12 months or more. They are estimates, published twice a year on a year-ending basis, and the most recent periods are provisional and materially revised as more administrative data arrives. This site labels the year-ending date on every net migration figure.

How the data pipeline works

When an official release lands (almost always at 9:30am UK time), the relevant detailed datasets are downloaded from gov.uk and parsed into the JSON files that drive this site's pages and charts. Before publication, every figure is reconciled against the Home Office's own published summary tables: if a number computed from the detailed dataset does not match the summary table for the same period and definition, it does not go live. Each generated file records the publication it was built from and a generated_at timestamp, both visible on the datasets page.

Pages render their figures server-side from those files; the charts read the same files. One number, one source, everywhere it appears.

Revisions policy

Official immigration series are revised at every quarterly release. The most recent quarters are provisional, marked [p] in Home Office tables: voluntary returns revise upward as departures are verified, daily small boat counts are finalised quarterly, and ONS net migration estimates are revised for up to two years. This site always shows the latest published vintage: when a release revises a past quarter, the site's figures change with it. A figure read here last month may therefore differ from the same figure today; the publication named alongside each figure identifies the vintage.

Update cadence: which release updates what

Exact upcoming dates, with countdowns, are on the release calendar.

Release	Publisher	Frequency	Updates on this site
Immigration System Statistics quarterly	Home Office	Quarterly (Feb, May, Aug, Nov)	Returns and deportations, FNO returns, asylum applications and decisions, detention, asylum support and hotels, organised immigration crime, finalised small boats
Daily small boat arrivals	Home Office	Daily	Small boats live tracker and daily series (provisional)
Small boats time series ODS	Home Office	Weekly (Fridays)	Weekly arrivals series and French preventions
Immigration Enforcement transparency data	Home Office	Quarterly	Illegal working visits and arrests, civil penalties, sponsor licence action, FNO community cohort
Illegal working penalties: UK report	Home Office	Quarterly	Named employers fined
Register of licensed sponsors	Home Office	Updated frequently; snapshot dated on page	Sponsor register search and summaries
Tribunal Statistics Quarterly	MoJ / HMCTS	Quarterly (Mar, Jun, Sep, Dec)	Appeals received, outcomes, open caseload, clearance times
Offender Management Statistics	MoJ	Quarterly	Foreign national prison population
Long-term international migration	ONS	Twice a year (May, Nov)	Net migration estimates
Stat-Xplore benefit statistics	DWP	Quarterly	Universal Credit claimants by nationality

How to cite, and licence

Citing a page: "Deported.co.uk, [page title], https://www.deported.co.uk/[page]/, accessed [date]". Page URLs and fact anchor links (for example on Quick Facts) are stable and are not renamed.

Citing a figure: every figure on this site names the government publication and as-of date it comes from; cite that source alongside the page, for example "Home Office, Immigration System Statistics year ending March 2026, via deported.co.uk". Because series are revised, quote the as-of date shown next to the figure.

Licence: all underlying data is Crown copyright, reused under the Open Government Licence v3.0. This site's compilations, tables and downloadable files are free to reuse, including commercially, with attribution to deported.co.uk. The raw files are on the datasets page.

Frequently asked questions

In law, deportation is removal on criminal or public-good grounds only. Most people who leave under immigration enforcement are administratively removed or depart voluntarily, so official statistics count returns instead. The headline is enforced plus voluntary returns: 39,371 in 2025. Port refusals (18,308) are always a separate series.

Usually one of four reasons: different definitions (adding port refusals to returns), different periods (calendar year vs year ending a quarter vs financial year), different vintages (series are revised every quarter, and voluntary returns revise upward), or stocks confused with flows (people in prison or hotels at a point in time vs returns over a year). Every figure here names its definition, period and publication.

On the official release cadence: small boats daily; the news digest and release calendar weekly; Home Office Immigration System Statistics quarterly (February, May, August, November); MoJ tribunal and prison statistics quarterly; ONS net migration twice a year. Dates and countdowns are on the release calendar.

Scope of this page

Definitions follow the publishers. Terms on this page restate the published Home Office, MoJ and ONS definitions; where a publisher changes a definition, this page and the affected series change with it.
"Deportation" in page titles. Pages use "deportation" in the everyday sense where readers search for it; tables and figures always use the precise published categories described above.
Snapshots vs flows. Prison population, hotel numbers and tribunal caseloads are point-in-time stocks; returns and arrivals are flows over a period. The two are never divided into rates on this site.
Provisional markers. Where a source marks recent periods provisional [p], figures here inherit that status even where a page does not repeat the marker; the revisions policy above applies.

Sources: Home Office Immigration System Statistics user guide and quarterly releases | Home Office daily and weekly small boats operational data | MoJ/HMCTS Tribunal Statistics Quarterly | MoJ Offender Management Statistics | ONS long-term international migration methodology.