History tells us that the Second World War broke Britain as a great power, diminishing its military strength, ruining its economy, and precipitating a striking wave of decolonization. Nationalists and new superpowers dominated the post-war landscape, and the country was on the slide. But no one knew this in 1945 - the leading politicians, the top civil servants, and the most knowledgeable experts, all expected the British Empire to remain intact long into the future. There was no hint of imminent collapse, and the governing elite and key opinion-shapers weren't considering decline and decolonization, evincing instead a new zeal for imperial renovation and a belief that an empire which had just survived another global conflict was vital for the peace and security of all humankind. They were even looking to expansion, securing the spoils of victory as they had done at the end of the First World War. Fully expecting to continue leading a great empire as well as a bloc of European nations recovering from war, the British had their own vision of the new world order. Furthermore, and astonishingly given what actually happened, British leaders were convinced that parity could be gained with the Americans and the Soviets: Britain was to remain a superpower in its own right.

What actually happened differed radically from these expectations. The question is, how do we account for the difference between what it was thought would happen and the actual course of events? Superpower Britain is the first book to focus in depth on this fascinating counterpoint and to fully integrate the history of Britain and the effects of the Second World War with the history of the British Empire. It explains what the British planned to do in the post-war world, why they thought their plans for regeneration and the future world order were viable, and what the war had actually done to British world power and its imperial foundations.