He wrote his first story in a school exercise book and had it accepted for publication in Chums in 1907 when he was seventeen.

[3] By 1913 he was an established story paper author, writing school serials for The Boys' Realm.

[4] Like his father, Robert Murray Graydon wrote a large number of Sexton Blake tales.

There were seventy stories in the first run of tales from 1916 to 1926 that featured in the Union Jack and the Sexton Blake Library.

Many of the adventures were republished as books in the Boys' Friend Library imprint of Amalgamated Press.