Energy savers recommend starting small, appreciating the savings and then doing some more.
Jill Goulder, for example, an archaeologist who lives in a late-19th-century terrace in Lewes has, over the years, reduced her bills by hundreds of pounds. “One of my favourite 'easy wins’ is acrylic secondary glazing, attached to frames with a magnetic strip. It’s unobtrusive, easy to install and stops draughts dead. It’s only about £60 a window,” she says (diyplas.co.uk).