BBC-“The number of British citizen have gone to Syria to fight alongside terrorist militants “, a senior UK intelligence official says. Andrew Parker, head of domestic intelligence service MI5, told a parliamentary hearing the conflict was attracting al-Qaeda UK sympathisers. MI5 has previously said that up to 200 British fighters are in Syria. Last month, BBC News learnt that a group of 20 young men from the UK were fighting against forces allied to Syrian President Bashar al-Assad on the Turkish border. “The attractiveness to these groupings is that they meet British citizens who are willing to engage in terrorism and they task them to do so back at home, where they have higher impact, in this country. We’ve seen that played out in previous plots here, including 7/7.”The MI5 chief noted.