Dunlop sold tyres to dealers. Part of the deal was that the dealers would not sell the tyres below a recommended retail price. Dunlop also required all dealers to obtain the same agreement from whoever they sold the tyres on to. Dunlop sold the tyres to Dew & Co. Dew & Co sold tyres to Selfridges who sold the tyres below the recommended retail price. Dunlop sued Selfridge.
Dunlop Pneumatic Tyre Co v Selfridge