Every time I see a headline like this I turn the maximum temperature of my central heating down by a degree. Guess I have to turn it down to 15°C.
The frost-guard "off" setting is 5°C, so assuming 1) nothing changes with regard to my living where I am and 2) we get headlines like this every 3-6 months, it looks like I might as well have my central heating ripped out permanently in about 4 years.