Since founding the Care Policy and Evaluation Centre in 1974 to study issues of equity and efficiency in community and long-term care by developing and applying a 'production of welfare approach, Bleddyn's work has focused on equity, efficiency and the reform of community care. Two main themes have been targeting and service productivities and efficiencies. Another has been the development of care management, the focus on which he introduced to the UK through a set of experiments four books and numerous papers during the 1970s and early 1980s.

A fourth has been financing mechanisms and reforms of long-term care in other countries. Another activity has been working with the team developing models for the long-run projection of demand and supply in long-term care. His main work currently is working with José Fernández to finish a book on use of community social services and their targeting, and a book on how differences in local authority priorities, other policies structures and endowments affect utilisation and efficiency.

He was awarded an OBE for his services to social science and social policy, and he is an Academician of the Academy of Learned Societies in the Social Sciences, and a Fellow of the Gerontological Society of America.

He lectured in economics in the University of Wales and in social policy at the LSE before founding CPEC in 1974 to study issues of equity and efficiency in community and long-term care by developing and applying a 'production of welfare approach.

Bleddyn has worked and been the author of books focusing on the theory of territorial justice (which he established with three books written in the 1960s), social and economic consequences of gambling, the mitigation of child poverty, and the economics of higher education.

He was awarded the American Public Health Association Gerontological Health Section's International Lifetime Achievement Award 2007. He is an Academician of the Academy of Learned Societies in the Social Sciences, and a Fellow of the Gerontological Society of America.