When she checks her son at night, Sandy Birtles can hardly see her teenager for all the coats on his bed. The single mother of two says they have to be careful not to use too much hot water, and they do all they can to keep warm but the bills keep rising. ‘I do not have the heating on when the kids are at school. If I'm not running around and clearing up, then I'm wrapping up in a coat.’ She said that financial pressures mean she has been ‘penny-pinching all the time’, but rising energy bills have added to the strain. A charity has predicted that she - and millions of others - will face a particularly difficult bill shock early next April when domestic energy prices rise. Domestic gas bills will have doubled in 18 months. Pray for suppliers to give more support to struggling customers.