It is reported that Noble left school at 13. He started work as a telegraphist in
Aberdeen aged 16. He studied
Pitman's shorthand, and in his spare time studied English, mathematics and the principles of electricity and magnetism. He gained several medals and prizes, and was employed for a time as lecturer in electricity and telegraphy at Gordon's College,
Aberdeen. His skill with shorthand led to an invitation to become a journalist, which he turned down. By 1893 he was appointed engineer-in-charge at the Aberdeen section of the Post Office. In 1901 he moved to
London and played a leading role in the development of the telephone network in the capital. War had interrupted the development of the civilian telephone network. He had been responsible for the selection of suitable officers for the Signals Section of the Royal Engineers. He appeared before both the Holt Committee and the Geddes Committee, and his evidence for the value of the work carried out by Engineering Department of the Post Office resulted in that department largely avoiding cuts. Noble had been responsible for plans for extending the
London Post Office Railway, expansion of which has been delayed by the recent war. He retired from The Post Office in 1922, having been appointed the chairman of the newly formed Broadcasting Committee. He considered standing as a Liberal Party candidate in an upcoming election, but he decided not to. == Later career ==