I. McLean, G. Lodge and J. Gallagher. Scotland's Choices: The referendum and what happens after it. Edinburgh: Edinburgh University Press 2013.
M. Balinski, R. Johnston, I. McLean and H.P. Young, Drawing a New Constituency Map for the United Kingdom: the Parliamentary Voting System and Constituencies Bill 2010. London: British Academy Policy Centre 2010.
S. Hix, R. Johnston and I. McLean. Choosing an Electoral System. London: British Academy Policy Centre 2010.
I. McLean, What's Wrong with the British Constitution? Oxford: Oxford University Press 2010. Joint Winner, W.J.M. Mackenzie Prize of the Political Studies Association of the UK for the best book in political science published during 2010. 2nd revised edition 2012.
I. McLean, Adam Smith, Radical and Egulitarian: an Interpretation for the 21st Century. Edinburgh: Edinburgh University Press. 2006.
I. McLean and C. Jennings ed., Applying the Dismal Science: When Economists Give Advice to Governments. Basingstoke: Palgrave Macmillan 2005.
I. McLean and A. McMillan, State of the Union: unionism and the alternatives in the United Kingdom since 1707. Oxford; Oxford University Press 2005. Winner, W.J.M. Mackenzie Prize of the Political Studies Association of the UK for the best book in political science published during 2005.
I. McLean, The Fiscal Crisis of the United Kingdom. Basingstoke: Palgrave Macmillan 2005.
I. McLean and B. Linsley, The Church of England and the States of the USA: reforming establishment for a multi-faith Britain. London: New Politics Network 2004.
F. McGillivray, I. McLean, R. Pahre, and C. Schonhardt-Bailey, International Trade and Political Institutions instituting trade in the long nineteenth century. Cheltenham: Edward Elgar 2001.
I. McLean, Rational Choice & British Politics: an analysis of rhetoric and maniupulation from Peel to Blair. Oxford University Press.
I. McLean and M. Johnes, Aberfan: government and disasters Cardiff: Welsh Academic Press 2000.
For full list see CV.