Target Group Index

TGI or (Target Group Index) is the longest established single source marketing and media survey in Britain and was established by BMRB in 1969. TGI has since expanded into over 60 countries with over 700,000 people being interviewed every year.

In Britain, TGI collects information from a representative sample of around 25,000 adults annually, the data is released quarterly. The survey asks questions covering consumer attitudes, motivations, media habits and purchase behaviour. TGI is a single source survey meaning respondents have to fill out the entire questionnaire, covering all question areas. Any TGI variable can be cross-analysed with another TGI variable.