According to the World Health Organisation, it is estimated that 65 million people have moderate to severe COPD. In 2005 3 million people died of COPD, which constitutes around 5% of all deaths globally. In England alone, it is estimated around 2.2million people are living with undiagnosed COPD. The decline in lung function is faster in the early stages. Therefore early diagnosis, adequate treatment and smoking cessation is paramount. Ultimately, the mortality rate from COPD is projected to increase by over 30% in the next 10 years and by 2030 it is estimated COPD will become the third leading cause of death worldwide.