This is simply the government reminding people to stay frightened. As Tony Benn told us all those years ago..
‘’There are 2 ways people are controlled, firstly frighten them, secondly demoralise them, this makes it easier to control people. An educated, healthy and confident nation is harder to govern. People are poor, demoralised and frighten and therefore they think the safest thing to do is take orders and hope for the best’’
Governments need to get you frightened, could be a possible act of terrorism, may be a Covid pandemic or climate change. Governments need to constantly remind you, you can’t survive without them.