His guides appeared in the 'Thorough Guide' series, edited by Baddeley and his colleague, Charles Slegg Ward, and included guides to Scotland (parts I to IV: The Highlands; Northern Highlands; The Lowlands; and Orkney & Shetland), Devon and Cornwall (north, and south), the Peak District of Derbyshire, the Eastern Counties, Wales (north Wales, parts I & II; south Wales), Ireland (part I: northern division; part II: southern division), Surrey & Sussex, Yorkshire (parts I & II: East; West), Bath and Bristol and  round, Isle of Wight. (These volumes were numbered I - XIX and had appeared by 1908.
The 'Thorough Guide' series, edited by Baddeley and Charles Slegg Ward, provided comprehensive guides to various regions in England and Wales. These included detailed information on Scotland, Devon & Cornwall, the Peak District, Eastern Counties, Wales (north & south), Ireland (northern & southern divisions), Surrey & Sussex, Yorkshire (East & West), Bath & Bristol, and the Isle of Wight.