Government funding is now available to help homeowners and residential landlords make homes more energy efficient. This could help to pay for improvements including insulating your home to reduce your energy use or installing low-carbon heating to lower the amount of carbon dioxide your home produces. The grant could cover from to two thirds to the full cost of improvements, from £5000 to £10,000 depending on your circumstances.
Find out if you are eligible at https://www.gov.uk/guidance/apply-for-the-green-homes-grant-scheme.