Paul Maddrell, Lecturer in International Politics, University of Wales, Aberystwyth

"[The] most convincingly argued and well researched study on the subject." - European History Quarterly

"Spying on Science is one of the most impressive studies of Cold War intelligence to have emereged in many years...reliable and remarkably detailed...a model study of intelligence activity." - Richard J. Aldrich Journal of Cold War Studies

"The intrinsic pertinence of Maddrell's book to the world today, combined with the author's research, means that both specialised and non-specialised readers will find it wide-ranging, stimulating and useful ... a valuable contribution to the early history of the Cold War" - Calder Walton, English Historical Review

"An excellent account...easily accessible...it provides stimulating reading" - Pauline Elkes, History

"a highly informative book, which not only offers much new and to some extent surprising information but also once again clearly underlines the point that the Cold War was a comprehensive struggle, to which the combatants committed themselves completely." - Dr Bernd Stöver, H-Soz-u-Kult

"...a wealth of empirical evidence that broadens our understanding of the early years of the Cold War." - Dr Gary Bruce, German History

"Research into intelligence cannot do better than the synthesis of such varied sources. Maddrell is one of those who are thus taking this difficult area of research forward into the future. This empirically well-supported analysis by Paul Maddrell is exciting to read. It fits very neatly into the researches of Bernd Stöver, Armin Wagner and Matthias Uhl into Stövers presentation of the Cold War context and into Wagner and Uhls examination of the operations against the GDR of the Organization Gehlen (later the BND)." - Helmut Müller-Enbergs, Deutschland Archiv Vol 40, No 6

"Maddrell's book is an example of what can be accomplished by a dedicated author and is a significant contribution to the history of cold war intelligence." - Jeffrey T. Richelson, Technology and Culture

"Spying on Science is an important contribution to Cold War and intelligence history. [It] contains a wealth of detail about how the British and American intelligence services operated" - Ben Fischer, Formerly the Chief Historian of the CIA, International Journal of Intelligence and Counter-Intelligence