Methodology & Sources
Media data
Data for non-internet media are provided by IREP and are drawn from a survey of agencies.
Data are net of discounts, include agency commission and exclude production costs.
Sectoral data
WARC has harmonised Nielsen's gross adex data with the revenue figures we receive directly from media owners and industry bodies in order to produce a new measure of advertising investment by product category.
Sector totals have been compiled from the macro-level – a full list of the products included in each sector can be found here. Forecast years are projected using historic trends within...