By Tom Clementi Seven years on from the Manchester Arena bombing, the risk landscape has dramatically shifted. So it’s right that venues must do more to protect themselves from terror threats, says Tom Clementi Today marks the anniversary of the Manchester Arena attack in 2017, a senseless terrorist bombing in which 22 innocent people were killed and hundreds were injured. Figen Murray, the mother of one of the Arena victims, Martyn Hett, is reaching the end of her heroic 190-mile walk from Manchester to Westminster. She is anticipated to arrive at Downing Street this morning to demand that th…