At least 10,000 people die every winter in the UK because their home isn't warm enough. Living in a cold home puts millions of people with health conditions at particular risk of harm - health conditions such as respiratory diseases like COPD, emphysema, chronic bronchitis or bronchiectasis, cardio-vascular diseases and illnesses affecting the immune system such as arthritis, asthma, or those undergoing chemotherapy. Many people with these conditions have frequent admissions to hospital, usually with respiratory infections and it's estimated that living in cold homes costs the NHS £860 million a year.