Foreign National Offenders in UK Prisons

Foreign national offenders - people convicted of a crime in the UK who are not British citizens - are subject to automatic deportation once their sentence is completed, under the UK Borders Act 2007. The Act creates a statutory presumption of deportation for any non-citizen sentenced to 12 months or more in prison. In 2025, 5,632 foreign national offenders were deported - the highest figure since at least 2016 and 68% of all enforced removals made that year.

As of December 2025, 10,361 foreign nationals are held in prisons in England and Wales, representing 12.4% of the total prison population of 87,334. This compares to a foreign-born share of the general population of around 9.3% (2021 Census). The raw overrepresentation - 12.4% vs 9.3% - is the headline figure most often cited. However, the Migration Observatory noted in September 2025 that when the data is adjusted for the demographic profile of foreign nationals (who tend to be younger and more male than the general population - both factors associated with higher imprisonment rates), foreign nationals are actually slightly underrepresented in prison. The raw comparison overstates the difference.

The nationalities most represented among FNOs broadly reflect the largest migrant communities and, for some, specific patterns of criminal activity. Albanians represent a disproportionate share of FNO deportations - court interpreter data shows Albanian court demand is 53 times higher than what their population share would predict, and they accounted for 26% of all FNO deportations in 2025. The National Crime Agency has linked some Albanian networks to county lines drug distribution and sexual exploitation.

The gap between the current prison population (10,361) and annual FNO deportations (5,632) is often misinterpreted. The prison population is a snapshot - who is in prison on a given day. Annual deportations are a flow - how many left in a full year. Many of the 10,361 currently in prison are mid-sentence and cannot be removed until they have served their sentence. Others are awaiting appeal hearings. The meaningful comparison is: of those who completed their sentences and were eligible for deportation in 2025, what proportion was actually removed? That data is not published in disaggregated form.

A significant obstacle for some nationalities is country cooperation. Some nations refuse to issue emergency travel documents or actively obstruct the return of their nationals. Afghanistan and Eritrea - both with large prison populations relative to their UK community size - have consistently low return rates not because of successful appeals but because of diplomatic barriers.