The objective of the article is a diagnosis and assessment, based on empirical surveys, of trade promotion programmes organised by manufacturers, carried out in Greater Poland (Wielkopolska) in 2008. Answers were given by the addressees of trade promotions what means that their perception of the promotional activity needs not to be compliant with the manufacturers' real actions. The respondents were owners or managers of food warehouses. In the survey, they were asked of wholesalers' participation in the trade promotion organised by the manufacturer, their preferences related to various sales promotion techniques, objectives of the manufacturer's promotional campaigns, promotion duration and goods covered thereby as well as of assessment of the influence of trade promotions on sales outcomes of the whole warehouse and changes in sales of the goods promoted.