Britain has been planning to ban the al-Qaeda-inspired Islamic State of Iraq and the Levant (ISIL) under the British Terrorism Act.
The Home Office published a draft order on Monday that will be debated in parliament on Thursday.
The ban will make it a criminal offense to be a member of or to provide support to the so-called ISIL.
Home Office officials said that the move was triggered by the Takfiri organizations’ actions in Syria, but developments in Iraq had underlined the need to ban the group in Britain.
On June 10, the ISIL militants took control of the city of Mosul in Iraq, which was followed by the fall of Tikrit, located 140 kilometers (87 miles) northwest of the capital Baghdad.
Hundreds of thousands of people have been forced out of their homes since then.
Several witness accounts and video clips have been released showing the grisly crimes perpetrated by the terrorists against innocent civilians in the crisis-torn country. The ISIL militants have vowed to continue their raid toward Baghdad.
Al-Qaeda-inspired groups such as the ISIL have been behind many of the deadly bomb attacks targeting both civilians and government institutions across Iraq in recent years.
Recently, a similar gruesome video was released, purportedly showing members of the ISIL group brutally killing Shia Muslims in drive-by shootings in Iraq.
Meanwhile, four other terrorist groups operating in Syria also face being banned in Britain.
