Abu Rumaysah
Abu Rumaysah al-Britani, born Siddhartha Dhar (24 June 1983) also known as Jihadi Sid, is a British citizen who is an Islamic State (IS) militant. On 3 January 2016, he was named as the lead executioner in a film issued by IS from Raqqa, Syria that showed the execution of suspected British spies against the Islamic State.