Temperatures are expected to plummet across Britain this week and a 15-hour snowstorm could see as many as 25 areas hit by power cuts. A yellow weather warning for snow is in place from 3am on Tuesday and continuing through to 6pm the same day, impacting seven areas in Scotland . A yellow weather warning for ice could also see snowfall in England, with 'subzero' temperatures expected in another 18 areas including Durham, Cumbria and Northumberland as well as Yorkshire. The Met Office is warning