From 2004 selling cigarettes branded as "light" has been forbidden in the EU. All cigarettes must have less than 10 mg. tar and 1 mg. nicotine. The EU has special rules for marking cigarette packaging.
European Commission: tobacco policy http://ec.europa.eu/health/ph_......e_style/Tobacco/tobacco_en.htm
Action on Smoking and Health (ASH) http://www.newash.org.uk/