David Hall is director of the Public Services International Research Unit (PSIRU) in the Business School, University of Greenwich, London. David researches and teaches the politics and economics of public services, public finance and privatisation. David has special expertise in the sectors of water, energy, waste management, and healthcare. Before becoming director of PSIRU, David worked for over 25 years in teaching and research in public services, privatisation, and industrial relations for colleges, research institutions, and trade union research units.