Moreland originally worked as a commercial traveller, subsequently moving to London. In his mid-20s, he began working in the advertising department of the Star, a London evening newspaper. A vivid caricature drawn by Moreland of Ernest Parke, then an executive on the paper, found its way to its subject and, rather than being dismissed, Moreland found himself appointed to the art staff. He became the political cartoonist for The Morning Leader and his work was reprinted as Humors of History (1898) and More Humours of History (1925). During the war, he produced The History of the Hun (1917) in a similar vein and The Comic History of Sport (1924), reprinted material from All Sports. His cartoons were noted for their pungent wit and it is said that they contributed to the Liberal landslide of 1906 and the revival of Liberalism. He retired from drawing political cartoons during the First World War and instead worked freelance for many papers. His work was exhibited at the Coronation Exhibition in 1911.