Son of Peter Fisher, of Perth, by Mary, daughter of James Kennay, of York, was born in London on January 30th, 1788. He was apprenticed to John Andrews and was educated at St George's and Westminster Hospitals. He was appointed Surgeon to the Bow Street patrol in 1821, and was promoted to the post of Surgeon-in-Chief to the Metropolitan Police when the Force was established in 1829. The University of Erlangen conferred upon him the honorary degree of MD in 1841. He was never a Member of Council of the College of Surgeons, as is stated in the *Dictionary of National Biography*. He received the honour of knighthood on September 2nd, 1858, and retired on a pension in 1865. He married: (1) Louisa Catherine, daughter of William Haynes of Kibworth Harcourt, Leicestershire (d.1860); (2) Lilias Stuart, second daughter of Colonel Alexander Mackenzie of Grinnard, Ross-shire. He died at 33 Park Lane, London, on March 22nd, 1876, and was buried in Kensal Green Cemetery. His will was proved on April 22nd, the personalty being sworn under £50,000. Fisher is described as a good practitioner, honourable, hospitable, and steadfast in duty.