an extra £1 billion will be used to insulate thousands of homes across england, scotland and wales. the government has announced a three year programme, beginning next spring, which will provide loft and cavity wall insulation. they say it should help those who qualify save hundreds of pounds on their bills. 0ur political correspondent damian grammaticas reports. when it comes to our homes, the uk is said to have the oldest and least energy efficient housing in europe. much of it leaky old victorian terraces, built over 100 years ago. a legacy of the industrial revolution. there is already a government scheme to get energy firms to help improve the worst homes. called eco, it s been in place for almost a decade, and is open to those in social housing or who own their own homes or rent privately and are on some benefits. it s now being expanded with another £1 billion. but only starting in spring next year and eligibility extended to those in lower council tax bands.