Reports compare Britain’s proposed maximum-security prison concept with El Salvador’s Terrorism Confinement Centre (CECOT), described as a “supermax” facility. According to the article, CECOT is built by the El Salvadoran government to hold “high-ranking” members of the country’s main gangs. The source frames the facility as a dedicated detention unit intended for the most dangerous inmates, listing categories including those tied to terrorism-related offenses as well as people convicted or accused of serious violent crimes. The reporting contrasts CECOT with Britain’s “mega jail” concept, focusing on how each facility is designed to confine high-risk prisoners. However, the provided text does not include detailed, verifiable operational specifications for the British project, such as its capacity, security model, or comparable inmate classification system. Overall, the sources present CECOT as a specialized detention centre in El Salvador and use it as the basis for a reported comparison to Britain’s plans for a maximum-security prison.