24CAD49300000578-2914486-image-a-10_1421522334899The Arctic blast which swept Britain today could kill one person very seven minutes a charity has warned, with temperatures set to plummet even further and yet more snow on the way. Almost a million elderly people are at risk from the bitter cold as they cannot afford to heat their homes, Age UK warned last night. But the big freeze is expected to continue throughout the weekend and into Monday with the mercury forecast to drop as low as -15C following a night which saw six inches of snow fall in some parts of the country.  A blanket of snow covered much of the UK this morning, with as much as six inches in parts of Cumbria and the Lake District, according to the Met Office. Freezing temperatures were experienced by much of the nation as snow fell across most of Scotland, the north of England and the south-west.  In Leeds, two constables had to pull a woman from the freezing River Aire last night. The 22-year-old woman was taken to hospital but sustained no serious injuries. A police spokesman said the ‘quick thinking and commitment’ of the officers prevented a tragedy.  The Chilterns, Cotswolds and the Pennines were also hit by snow, while gritters were out once more to deal with ice on the roads, with the south told to expect more ‘wintry showers’ and a dusting of snow tonight. Age UK’s charity director Caroline Abrahams said the cold would put almost a million elderly people at risk as they cannot afford to heat their homes. More