This is a presentation from a BEAM webinar which focused on how programmes are collaborating with firms to make particular market systems work better for poor people. Questions discussed included: why work with the private sector? how do you find the right partner? what capacities are needed? how should you deal with external market distortion? The speakers were: Daniel Roduner (Agridea), Susan Maina (Kenya Markets Trust), and Andrew Wilson (MarketMakers). The webinar took place on 15 April 2015.