Met Office warns of ‘substantial disruption’ as cold snap grips northern half of UK For free real time breaking news alerts sent straight to your inbox sign up to our breaking news emails Sign up to our free breaking news emails Sign up to our free breaking news emails Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice Schools could face closure as snow and ice warnings come into force across the UK . The Met Office warned