By Monica Charsley Brits have been warned to get out their hats and scarfs as an Artic Blast is set to hit the UK from the middle of this week as temperatures are expected to plummet. It comes as new maps, released by WX Charts, have revealed colder temperatures will first appear in the northeast as the mercury is set to drop to a mere -1C on Wednesday, before places such as Scotland will experience a mere -5C. The freezing conditions are set to spread across the country, with a 479-mile cold snap that will travel from Manchester all the way to Scotland. The wintry weather is expected to spark…