Barry Coward was Reader in History at Birkbeck College, University of London. His publications include Oliver Cromwell (2000) and The Cromwellian Protectorate (2002).

Peter Gaunt is Emeritus Professor of Early Modern History at the University of Chester and a current Vice President and past Chairman and past President of The Cromwell Association. His previous publications include studies of the civil wars of the 1640s in English, Welsh and British contexts, of Oliver Cromwell and of Protectoral central government. With Barry Coward, he is the author of English Historical Documents, 1603-1660 (2010), and with Roger Lockyer, of the most recent edition of Tudor and Stuart Britain, 1485-1714 (2019).