The Fairtrade Foundation's in-tray is growing. The charity oversees the relationships between farmers and manufacturers and, with the likes of Nestle, Cadbury and Unilever extending their presence in Fairtrade, the foundation has a key role in organising farmers and checking companies are paying a fair price. Harriet Lamb, the foundation's executive director, talked to Michelle Russell about the impact big brands have had on Fairtrade, consumer awareness and the international potential of the category.