Lawrence Wright was the first music publisher to set up premises on Denmark Street. He was initially based at No. 8 and moved to No. 11 after World War I.

Wright used to call himself "The Daddy of Tin Pan Alley" and "The King of British Songwriters". He liked to show off and was famous for promotional stunts, such as riding a camel around Piccadilly Circus to promote his 1924 song "Sahara", and flying the entire Jack Hylton Orchestra around Blackpool Tower in 1927, while dropping sheet music on the visitors, to promote the song "Me and Jane in a Plane".  

In 1926, he founded musicians' journal The Melody Maker, which initially gave special prominence to songs written by him under the nickname Horatio Nicholl, and published by his own company. Melody Maker was one of the world's earliest music weeklies. The journal became popular, especially among musicians, but because of his conflict of interests Wright sold it to Odhams Press in 1929. The magazine lived on until 2000. In January 2001, it was merged into "long-standing rival" (and IPC Media sister publication) New Musical Express - another famous “child” of Denmark Street.

Source: Wikipedia