The book of Bartłomiej H. Toszek titled: The devolution reform in the programs of the main political parties in Wales 1997–2011 is the result of the author’s long-term research of the Welsh devolution and it constitutes a contribution to a number of publications analyzing the devolutionary changes taking place in Great Britain since mid 1990’s. In the first part of the work, the author defines and characterizes what devolution is, what was its genesis, its nature and evolution in Wales. Usually politicians and political parties are behind the introduced constitutional changes. In the second chapter of the publication we find a thorough analysis of the specificity of the Welsh party system. The third part, it presents the foundations of the devolution reforms in the programs of the Welsh political parties during the period 1997–2011. B. H. Toszek does not avoid showing the political and historical background of the decision making process. He presents in a very interesting manner, the attitude and proposals for the devolution reform of the main political groups in Wales over the space of nearly 15 years. The work is based, among others, on the analysis of the program documents, electoral manifestos of the four, most important political groups, having the largest impact on political and political decisions taken in Wales: the Welsh Labor Party, the Welsh Conservative and Unionist Party, Plaid Cymru and the Welsh Liberal Democrats. This is valuable and very interesting work, and the reader will certainly not be disappointed with this publication.