In a recent issue of the Review John Baylis discussed wartime thinking in Great Britain about a post-war European security group. Baylis's contribution is of great importance to the historiography of wartime and post-war British foreign and security policy, filling a void in our knowledge of these crucial years. However, we would like to make some critical comments on his treatment of the Post-Hostilities Planning Staff report ‘Security in Western Europe and the North Atlantic’, which is such a central feature in his contribution. According to Baylis this particular study by the PHPS (an interdepartmental study group created by the British War Cabinet) laid down ‘a reasonably coherent set of attitudes’ regarding post-war European co-operation. The PHPS, collecting together much of the current thinking in both Foreign Office and military circles, advocated the formation of a Western European-Group as a kind of insurance against a rearmed Germany ors if the world organization failed to materialize, against a potentially hostile USSR. The report marked the formation of a ‘consensus’ among Foreign Office and military officials involved in post-war planning.