The Final Winter by Iain Rob Wright

From Kindle

This is a very fair example of the novel of the supernatural, which is not my favourite genre as they are often very similar and strain to produce the thrills.   Wright, however, has managed to produce something rather more original than the usual run.
The whole world is being smothered in a blanket of snow, even the tropics and the deserts crouch under arctic blizzards.   In a pub called The Trumpet (this must be in the West Midlands) the main character Harry watches the reports on the bar TV until the signal finally fails.   Keeping him company as he tries to drown the grief of losing his wife and son to a traffic accident are Steph the barmaid, old Graham an ex soldier, Nigel a lorry driver and Damian the local gangster.   As the power is cut off and the snow falls relentlessly they are joined by the staff of the local supermarket who report seeing creatures so frightening that they are disbelieved by the others until events prove their veracity.  
Further description of the plot would merely spoil a good few hours read for anyone ready to take a chance on an unknown writer.