Despite more than 600 British jihadists having fled for Syria and Iraq , only 25 terror suspects are currently subject to asset-freezing orders . In total , just £61,000 in 59 bank accounts belonging to suspected terrorists has been blocked by the Treasury , a report has found . The report , by the independent reviewer of terror legislation David Anderson QC , showed another 28 people have had their bank accounts in the country frozen under European orders . Scroll down for video . Only 25 terror suspects are currently subject to asset-freezing orders , a report by independent reviewer into terror legislation David Anderson QC ( pictured ) , revealed . It showed there were eight new Treasury designations in the year to September 2014 under the Terrorist Asset-Freezing Act 2010 - a sharp decline from 162 in 2008 . Mr Anderson concluded the figures for assets frozen were 'remarkably low . He said they indicate asset-freezing has played only a 'marginal role ' in combating 'the most serious terrorist threat of the present time ' . Sharmeena Begum was revealed as the 15-year-old British schoolgirl who led three others to join ISIS . 'Travel to and from such conflict zones , together with the preparation of terrorist acts , often requires funding and facilitation , ' he said . 'There has been an attempt to use asset-freezing legislation to respond to the threat posed by UK residents who travel to and from Syria and Iraq for the purposes of terrorism . 'But bearing in mind that over 600 Britons have travelled out there , the small number of designations indicates that asset-freezing has played only a marginal role in combating the most serious terrorist threat of the present time . ' The report will raise serious concerns as increasingly numbers of young homegrown jihadists continue to abandon their homes in favour of Islamic State . It comes as the identity of a 15-year-old London schoolgirl who led her three best friends to Syria after becoming radicalised was revealed . Sharmeena Begum fled Britain to join Islamic State in December - and was the first of four GCSE pupils at the same school to become jihadi brides . She is believed to be in the IS stronghold of Raqqa with Bethnal Green Academy pupils Kadiza Sultana , 16 , Shamima Begum , 15 , and Amira Abase , 15 , who travelled to Syria last month . Yesterday , video emerged apparently showing the three runaway British schoolgirls in Turkey before they fled into Syria to become brides for Islamic State militants . The footage is believed to have been taken by a foreign spy who was arrested for helping the trio cross the border . The girls are said to have first arrived at Istanbul Ataturk Airport before heading to the southern city of Gaziantep close to the Syrian border . New footage emerged that claims to show three British schoolgirls in Turkey before they fled across the border in Syria to become jihadi brides for ISIS militants . The footage is believed to have been taken by a foreign spy working for the Canadian intelligence service who was arrested on Thursday for helping the trio cross the border . Earlier this week , it emerged the girls had paid for their flights out of the UK after stealing jewellery from their family . Police discovered they paid the £1,000 cost of their flights from Gatwick airport to Istanbul in cash . But their families , appearing before the House of Commons home affairs committee , insisted that someone else helped them with the cost of the air tickets as the missing jewellery was not worth £1,000 . Halima Khanom , sister of Kadiza Sultana , said : ‘ My sister used to borrow a piece of jewellery off my daughters that was very sentimental to her and that ’ s what she ’ s taken . Pictured from left , Amira Abase , Shamima Begum and Kadiza Sultana paid for their flights out of the UK after stealing jewellery from their family . They are understood to be in the ISIS stronghold of Raqqa . ‘ I feel there is someone out there helping in terms of funding because there ’ s no way my sister has got the cash to fund herself. ’ At least 22 young women , the majority under the age of 20 , are feared to have travelled to Syria from the UK over the past 12 months . Police said the total confirmed number of people travelling to fight is now around 700 , with many more suspected of flying out undetected . Islamic State seized large swathes of land across Syria and Iraq last June , including territory close to the Turkish border . Khadiza 's cousin Fahmida Aziz ( left ) , Shamima 's sister Sahima Begum ( centre ) and Amira 's father Hussen Abase ( right ) , appeared before the House of Commons home affairs committee earlier this week .
Treasury has blocked just £61,000 in 59 accounts of suspected terrorists . David Anderson QC , independent reviewer of terrorism legislation , said figures were 'remarkably low ' Comes as identity of 15-year-old schoolgirl who joined ISIS is revealed . Sharmeena Begum led three best friends to join terror group the year to September 2014 .