Madeleine’s research focuses on the impacts of migration policies and the measurement of migration, particularly in the UK and other high-income countries. Her work has examined whether and how migration policies can adjust to labour and skill shortages; how policies affect the scale, composition and impacts of migration; and how immigration rules affect different people and organisations in different ways. She also has a keen interest in the policy implications of how we measure migration—as well as how to produce migration statistics and research that can inform policy decisions more effectively.