Tesco, Sainsbury's, Morrisons and Iceland are good at promotions. Asda, Somerfield and Kwik Save aren't

Suppliers say retailers are still applying a one-size-fits-all approach to promotions

Retailers are too focused on competing on price rather than on promotional returns

Suppliers claim the quality of support is poor. They say problems are often created by buyers who put their category brands into competition with products in other categories to secure secondary locations such as gondola ends

Retailers place too much emphasis on big brand promotions that exclude smaller players