KEY POINTS
Keith Weed, Unilever's chief marketing officer, speaking at Advertising Week Europe in London on 20 March 2017

Unilever has the second-largest marketing budget in the world, spending €7.7 billion ($8.4 billion) on brand and marketing investment, according to its 2016 annual report, and it is chief marketing officer Keith Weed's job to make sure the business gets enough bang for its buck, persuading 2.5 billion people a day to use its products.

One of Weed's biggest concerns is getting people to watch its ads online, for brands from Axe in the U.S. to Bushells Tea in Australia, in a world where people have many distractions, and Weed is particularly worried about how the advertising industry – and Unilever's suppliers - decides whether something has actually been viewed or not.