 He had befriended the Unitarian reformer, Mary Carpenter, during his stay in England, 1862–1866.When she visited Kolkata in 1869 with a definite scheme for promoting women's education, Ghose was among her most ardent supporters.She succeeded in setting up a normal school for training teachers under the Indian Reform Association led by Keshub Chunder Sen.

During his stay in England he had befriended another Unitarian, Annette Akroyd.