At the age of seventeen he went to work at the London Stock Exchange, quickly becoming a senior clerk to a leading firm, a post he held for five years.
Compelled by illness to leave his job, Sedger took a long sea-voyage, which inspired him to go into the newly developing Canadian meat-shipping business.
[2] For the benefit of his wife Sedger secured a lease of the Novelty Theatre in Great Queen Street, London, in December 1883, and during his connection with it he made his debut as an actor.
[4] Over the next few years he followed this with other light operas: The Mountebanks (1892) by W. S. Gilbert, Cellier and Ivan Caryll; Incognita (1892), an adaptation of Charles Lecocq's Le coeur et la main; The Magic Opal (1893) by Arthur Law and Isaac Albéniz; The Golden Web (1893) by Stephenson, Frederick Corder and Arthur Goring Thomas; and Caryll's Little Christopher Columbus (1893).
In 1898, together with Arthur Eliot, he presented a revival of Slaughter's Alice in Wonderland at the Opera Comique and the following year he became embroiled in a dispute with Oscar Wilde.