The empire at high tide
The empire between the wars, 1918 to 1939
The 1940s: a new kind of empire?
The final retreat from empire, 1950 to 1970
Global legacies of the British Empire.
The second British Empire : in the crucible of the twentieth century by Timothy Parsons. ISBN 9780742520509. Published by Rowman & Littlefield in 2014. Publication and catalogue information, links to buy online and reader comments.