This week we’re in South Africa, picking up great big squirming handfuls of maggots. Could these unpalatable little creatures hold the answer to some big questions – what to do about the huge amount of waste going into landfill, and how to meet the world’s growing demand for a sustainable supply of farmed fish, pigs and poultry?

A company called Agriprotein thinks its fly farm is the solution. They've just won The Food Chain’s first Global Champion Award - which recognises innovative ideas that could have a longstanding impact on the way we produce or consume food. The Food Chain's Emily Thomas gets up close to their armada of over 9 billion flies in the first of two episodes to explore the potential of using insects as a protein source for animal and fish feed.