Religion in Iraq
Islam is the official state religion in the Republic of Iraq, but the constitution guarantees freedom of religion. Iraq is a multi ethnic and multi religious country with Islam, Christianity, Yazdanism, Zoroastrianism, Shabakism, Judaism, Mandaeism, Bahā'i, Ahl-e Haqq-Yarsanis, Ishikism and numerous other religions all having a presence in the country. Shia Islam is the main religion in Iraq followed by 60–65% of the population, while Sunni Islam is followed by 32–37% of the people. Many cities throughout Iraq have been areas of historical prominence for both Shia and Sunni Muslims, including Najaf, Karbala, Baghdad and Samarra.
Islam in the United Kingdom
An August 2017 survey by the Bertelsmann Stiftung foundation found that among British Muslims, 75% were Sunni and 8% were Shia.
A September 2017 survey by the Institute for Jewish Policy Research (JPR) found that among British Muslims, 77% were Sunni, 5% were Shia, 1% were Ahmadiyya, and 4% were members of other denominations. 14% of British Muslims said they didn't know or refused to answer the survey.