In July 1999 the Health Select Committee began an investigation into the British tobacco industry to determine what action it had taken and was taking in response to the known harmful effects of smoking and the addictive nature of tobacco. One of the committee's key achievements was to force the disclosure of a large quantity of internal company documents, including—for the first time—material from the UK tobacco industry's leading advertising agencies.

These documents cover all matters to do with tobacco promotion. They shed a unique light on the social research that has been done over the past 20 years to establish if and how tobacco promotion affects smoking behaviour. This research has been extensive but by necessity limited to studying observable outputs. The documents complete the picture by disclosing the inputs. In the process the documents corroborate the key findings of research and also yield much about the motivations and mindset of the UK tobacco industry.