Emergency alert test happens today - here s everything you need to know - Sky News businesstelegraph.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from businesstelegraph.co.uk Daily Mail and Mail on Sunday newspapers.
The company behind the UK s alert system has worked on the same technology for countries including Germany, New Zealand, Singapore, and the Netherlands, and has insisted it will be a "game changer" for public safety.