"The older you get the more you want to put the heating on but most old people don't have the access to a computer to see the deals which can stretch their money further, " she said.
At an operations control center in the English city of Derby, a handful of railway engineers spend their days focusing intently on four large wall-mounted computer screens displaying data about the conditions of the engines, the heating and cooling systems and whether a door might be jammed on any of 33 Scottish trains.