CEP Managing Director Madeleine Joelson and CEP Managing Director Daniel Roth write: "The United Kingdom just banned Hizb-ut Tahrir (HT), an extremist Islamist group with affiliates in at least 32 countries, including the United States, that calls for re-establishing the Islamic Caliphate and implementing Sharia (Islamic law). Given its outsized role in radicalizing several convicted terrorists, including notorious ISIS executioner “Jihadi John,” HT Britain has a far more notorious reputation than its still-active Transatlantic cousin, HT America."

"Hizb ut-Tahrir is global, and much of its current leadership is in the UK and Australia. The group is banned across the world, including in the Middle East. Jordan, Saudi Arabia, Lebanon and Turkey have all outlawed Hizb ut-Tahrir, according to the New York-based Counter Extremism Project."

"According to the Counter Extremism Project, Hizb ut-Tahrir advocates the establishment of a global Muslim caliphate and presents Islamic law (Sharia) as an alternative to both capitalism and secular democracy."

"According to the Counter Extremism Project, Hizb ut-Tahrir is banned in 'at least 13 countries', including Pakistan, Lebanon and Egypt and advocates for a 'global caliphate'. The group is not proscribed in the UK."