 In 1844 he was elected Fellow of the Royal College of Surgeons.Todd's abiding interests were in physiological medicine (a field then in its infancy) and in the improvement of hospital nursing, and always held to a high standard of general and religious knowledge.He became a Professor at King's College London in 1836 and was prominent in the opening of King's College Hospital in 1840, and in the founding of its new building in 1851.