Frederick was a clockmaker until he left home to go to London, where he enlisted in the Metropolitan Police on 5 January 1863, being appointed to N Division (Islington) with the Warrant Number 43519.
Frederick foi reloxeiro ata que abandonou a súa casa para irse a Londres, onde se alistou na policía metropolitana o 5 de xaneiro de 1863, sendo destinado á División N (Islington) co número de autorización 43519.