US Edition 
Tunisia attack: gunman's links to Britain
Seifeddine Rezgui's terror group broke off from al-Qaeda arm founded by a Tunisian living in London
The gunman who massacred British tourists on the beach in Sousse was inspired by a fanatic who ran a terror network from London.
Seifeddine Rezgui’s terror group is believed to be Ajnad al-Khilafah. It grew out of Ansar al-Sharia, a hardline Salafi group whose Tunisian branch was founded by Saifallah Ben Hassine.
Ben Hassine, 49, arrived in Britain in the late 1990s and became a follower of the al-Qaeda cleric, Abu Qatada, who was then also based in London.
The gunman strolling down the shore with his weapon as people watch in horror from behind. (Sky news)
High Court papers relating to a control order placed on a British-based suspect state Ben Hassine used London as his base for founding and running the “Tunisian Fighting Group” from 2000 onwards.
The network had links to Al Qaeda and, according to the papers, “aimed to recruit new members and send them to Afghanistan for training”.
The documents add that: “Abu Qatada appears as a watermark running through the whole of this case as being the mastermind.”
Abu Qatada was eventually deported from the UK after a lengthy legal battle (AP)
Ben Hassine is thought to have spent three years in London, and by 2011 he established Ansar al-Sharia, the group which Rezgui's family say are to blame for his radicalisation.
Rezgui’s family say he was indoctrinated while studying for a master’s degree in Kairouan, a town 35 miles from Sousse which is a hub for Ansar al-Sharia.
Ali Al-Rezgui, uncle of gunman Seifeddine Rezgui
The leader of Kairouan’s great mosque said Ansar al-Sharia was among the most likely groups to have groomed Rezgui.
The terror organisation, which was behind a suicide attack at another beach resort in Sousse two years ago, has since divided between support for al-Qaeda and for the rival Islamic State of Iraq and the Levant.
Ben Hassine remained close to Abu Qatada, who was deported from Britain in 2013 after a lengthy legal battle.
In January last year, Abu Qatada wrote in a letter published online that Ben Hassine “is among the best of those I have known in intellect” and “the most knowledgeable of people of my intentions … for he was the closest of people to me”.