This dictionary investigates the etymological origins and historical development of place-names in Great Britain and Ireland that have emerged or evolved since the year 1500. Adrian Room, a noted authority on onomastics and toponymy, utilizes historical records, cartographic data, and linguistic analysis to document how social, political, and industrial shifts influenced the naming of settlements and landmarks. The work provides a structured framework for understanding the evolution of modern nomenclature within the British Isles.

Scholars and researchers frequently cite this text as a specialized reference for identifying the origins of modern toponyms that are often overlooked in broader historical dictionaries. Experts highlight the clarity of the entries, noting that the book serves as a practical tool for those interested in the intersection of linguistics and local history.