When the British School decided to bring to an end its excavations at Sparta in the year 1910, after five campaigns, it was fully aware that the possibilities of the site were by no means exhausted. Its varied activities before the war, at Phylakopi and in Crete, and after the war at Mycenae, have formed the subjects of full reports in various volumes of the Annual from XVII (1910–11) onwards, but when Mr. Wace's tenure of the Directorship came to an end, the decision of the Committee to resume work on a site of the Classical period led to the renewal of work at Sparta forming their first choice. The fact that the new Director had taken an active part in three of the five original campaigns was an additional reason for returning there, and it was accordingly resolved to resume operations in 1924, with the Theatre as the first objective; and in hopes, moreover, of carrying out a fuller exploration of the Acropolis, and also of gaining fresh information as to the topography of ancient Sparta by extensively testing portions of the ancient city previously unexamined. The principal results of the work of the two seasons, 1924 and 1925, form the subject of the present report.