Lung cancer incidence by sex and UK region. Lung cancer is the second most common cancer in the UK (2012), accounting for 13% of all new cases. It is the second most common cancer in both males (14% of all male cases) and females (12% of all female cases).[ 1-4 ].or males aged 80 and over lung cancer incidence rates increased by 13% between 1979-1981 and 1985-1987 and have since decreased by 29%. For males aged 70-79, the rate declined by 42% between 1979-1981 and 2007-2009, and have since remained stable.