UK police arrested two more men Friday in connection with an investigation into suspected membership of a banned organization . It comes a day after nine men were arrested in London on terrorism charges , one of them named in British media reports as radical British cleric Anjem Choudary . The two latest arrests came in the early hours in a swoop on a vehicle traveling on the M6 motorway , which runs northwest from the English Midlands to Manchester and beyond . One suspect , aged 33 , was arrested on suspicion of being a member of a banned organization , supporting a banned organization and encouraging terrorism , London 's Metropolitan Police said in a statement . The second man , aged 42 , was arrested on suspicion of assisting an offender . Both remain in custody at a central London police station . The nine men arrested Thursday , ages 22 to 51 , also remain in custody in London , police said . Searches continue at a number of addresses . `` These arrests and searches are part of an ongoing investigation into Islamist related terrorism and are not in response to any immediate public safety risk , '' the police statement said . Radical cleric . Anjem Choudary , who was a co-founder of the banned UK Islamist group Al Muhajiroun , told CNN last month that the world had been split into two camps . There 's a `` camp which believes that sovereignty and supremacy belongs to God . They are the Islamic State , at the head of which is Abu Bakr al-Baghdadi , '' Choudary said . `` In the other camp you have those people who believe sovereignty and supremacy belongs to man . At the head of that camp is Barack Obama . '' `` I believe this Islamic State will spread , rapidly , and I believe it will be in Europe and even America within decades . '' Police have not named the suspects or the banned organization concerned . Cameron lays out plans to counter UK jihadi threat . Terror threat level raised . The Home Office has listed 60 international proscribed terrorist organizations as of August 2014 . They include networks such as ISIS and al Qaeda , as well as UK-based groups such as Al Muhajiroun , which emerged in 1996 and has operated under a range of other names since being disbanded in 2004 and banned in 2010 . The UK Home Office last month raised its terror threat level from `` substantial '' to `` severe . '' The government also announced new measures to combat the threat from Islamist extremism , including a radical new measure to ban Britons from coming home once they join jihadi ranks abroad . UK authorities estimate that 500 Britons have gone to Syria and Iraq to fight with Islamist groups .
London 's Britons arrest Nine men in a swoop on a vehicle on a highway . 11 suspect is suspected of terrorism offenses , the other of aiding an offender . Nine men were arrested 33 in London on suspicion of terror offenses . Police are holding all Nine suspects in London police stations and searching multiple addresses .