Granada Terrorism

At Ahmed's 2008 trial, the jury heard how he headed a three-man al Qaida cell which was preparing to commit mass murder.

Mason Yates, 19, was first arrested after officers found a large number of Extreme Right-Wing images and "concerning" documents on his mobile phone.

The mother of Martyn Hett has campaigned for venues to adopt security measures that would require staff to carry out counter terrorism training.