Volunteers have reported that ‘a large number’ of elderly customers are snapping up hardbacks as cheap fuel for their fires and stoves. Temperatures this week are forecast to plummet as low as -13ºC in the Scottish Highlands, with the mercury falling to -6ºC in London, -5ºC in Birmingham and -7ºC in Manchester as one of the coldest winters in years continues to bite. Workers at one charity shop in Swansea, in south Wales, described how the most vulnerable shoppers were seeking out thick books such as encyclopaedias for a few pence because they were cheaper than coal. One assistant said:...