It will assure the public that they “do not need to take any action” and include a message in both English and Welsh. On Monday, the Cabinet Office said the text message will include both English and Welsh and be sent to mobile phones on 4G and 5G networks in the UK. Chancellor of the Duchy of Lancaster Pat McFadden (Ryan Jenkinson/PA)It will read: “This is a test of Emergency Alerts, a UK government service that will warn you if there’s a life-threatening emergency nearby. In a real emergency, follow the instructions in the alert to keep yourself and others safe. Liberal Democrat Cabinet Office spokeswoman Sarah Olney has suggested the Government follows Scandinavian examples where the public have been handed pamphlets about preparing for emergencies.