The most dramatic peacetime prime-ministerial run for a century is considered by Downing Street historian Anthony Seldon, drawing on the perspectives and anecdotes of Theresa May's allies and adversaries.

Sir Anthony Seldon is a leading authority on contemporary British history and education and vice-chancellor of the University of Buckingham. He was formerly master of Wellington College, one of the world's most famous independent schools. He is author or editor of over forty books on contemporary history, politics and education and is the lead author on, and honorary historical advisor to, Downing Street.