He also played an important role in formation of the Dental Act of 1921 which made dentistry a profession in Great Britain.
He helped found and later became the president of the British Society for the Study of Orthodontics, serving from 1909 to 1939.
This group of men came together to form British Society for the Study of Orthodontics (BSSO).
Dr. Northcroft was interested in studying the growth and development of the skull and jaws related to children.
[5][6] During yearly conference of British Orthodontic Society, Northcroft Memorial Lecture is delivered by an outstanding orthodontist.