Arctic winds will bring freezing weather to many areas this week with sub-zero temperatures forecast by the Met Office. A northerly airflow, say meteorologists, will bring significantly colder air to the UK from Sunday as the Arctic airmass ‘exerts its influence’. A chance of ‘disruptive snow’ is also possible for some central and southern areas around the middle of the week, suggest forecasters, who admit there is ‘still plenty of detail to work out’. Met Office Deputy Chief Meteorologist Chris Bulmer explained: “There are a couple of weather systems for Tuesday and Wednesday which we are kee…