M.H. Keen 
England in the Later Middle Ages [PDF ebook] 
A Political History

First published to wide critical acclaim in 1973, England in the Later Middle Ages has become a seminal text for students studying this diverse, complex period. This spirited work surveys the period from Edward I to the death of Richard III at the Battle of Bosworth, which heralded in the Tudor Age.
The second edition of this book, while maintaining the character of the original, brings the study up to date. Each chapter includes a discussion of the historiographical developments of the last decade and the author takes a fresh look at the changing world of the Later Middle Ages, particularly the plague and the economy. Also included is a rewritten introduction.