Reform UK has introduced a new policy proposal aimed at addressing the current overcrowding crisis within the United Kingdom's prison system. The party argues that by transferring foreign national prisoners to facilities located outside of the country, the government could free up significant space within the domestic prison estate. This strategy is presented as a primary solution to avoid the necessity of early release schemes, which have been implemented to manage the high volume of inmates.

In addition to the proposal regarding foreign prisoners, Reform UK has outlined plans to expand the total number of available prison beds. The party intends to achieve this by constructing 'Nightingale' prisons—a term borrowed from the temporary hospitals established during the COVID-19 pandemic—to rapidly increase capacity. While the party frames these measures as essential for maintaining public safety and ensuring that sentences are served in full, the proposal has sparked debate regarding the logistics, costs, and legal implications of housing prisoners in foreign jurisdictions. Currently, the proposal remains a policy suggestion from the party and has not been adopted by the government.