Cuts to public spending mean there are far fewer police on the streets than before, and the public's obsession with security is on the rise. Over 7000 private security firms in the UK are stepping in to fill the gap - and business is booming. People are terrified by threats - some real, some imagined - and are willing to pay big bucks for everything from bodyguards to cutting-edge security equipment. Using a mix of CCTV footage, point-of-view narratives from security personnel and moving testimonies from victims, Call Security gets to grips with one of modern society's fastest-growing industries.