In the hundred years since the last major history of English metre was published dramatic changes have occurred in both the way that poets versify in English and the way that scholars analyse verse. 'Free' verse is now firmly established alongside regular metre, and linguistics, statistics, and cognitive theory have contributed to the analysis of both. This new study covers the history of English metre up to the twenty-first century and compares a variety of modern theories to explain it. The result is a concise and up-to-date guide to metre for all students and teachers of English poetry.