Many of the architects training and working in Douglas's office were influenced by him. Perhaps the best known of these were Edmund Kirby and Edward Ould. Kirby is best remembered for his Roman Catholic churches. Ould went on to design a number of buildings in Chester and further afield in a Douglas-like style, including notably Wightwick Manor and various buildings at Port Sunlight. Other architects who did not work in his office were also influenced by him; these include Thomas Lockwood, Richard Thomas Beckett, Howard Hignett, A. E. Powers, James Strong and the Cheshire County Architect, Henry Beswick.