By James Rodger & Joseph Wilkes Brace yourselves, Britain – a ’42 hour snow blast’ is set to sweep across the nation, with certain areas expected to bear the brunt of the icy onslaught. Weather maps have painted a chilly picture, indicating that nearly every corner of the UK will be engulfed by a polar freeze. As we venture further into April and edge closer to May, forecasters are predicting a “Jekyll and Hyde” scenario for the weather. The latest data from WX Charts, utilising Met Desk figures, suggests temperatures will take a nosedive starting at midnight on Tuesday, April 23, plunging the…