[1][2] Brett entered into an informal partnership with Ebenezer Landells (1808-1860), the Newcastle artist engraver, small publisher and one of the moving forces behind the satirical magazine Punch.
[1][2] In 1866 he started his own periodical, Boys of England, at 173 Fleet Street, a weekly magazine blending thrilling fiction and factual articles which was published for 33 years.
In 1868 Brett targeted a slightly older readership with Young Men of Great Britain, a 'healthy, moral, instructive and amusing companion for every age', which lasted four years.
[1][2] On 4 January 1849 he married Eliza (1832–1893), daughter of Henry Archer, a Clerkenwell butcher and they divided their time between two residences, Burleigh House, at 342 Camden Road, and Oaklands, on the Isle of Thanet.
[1] The majority of his publishing empire was left to his eldest sons, Edwin Charles and Edgar Percy, who continued to manage its titles until the business collapsed in 1909.