1902 onwards - NSW State Selector and active NSW umpire.
1912 - Olympic Games - general manager of the Australian team
Harry Gordon included the following passage on Vic Horniman in his book Australia and the Olympic Games:
The manager of the 26 strong Australasian team to Stockholm was Vicary Horniman, a Sydney militia civil servant who had served as a captain in the New South Wales militia until 1901, but had retained his army title and a military looking moustache.He was a keen rower, but not a distinguished one, and had been active as a starter, judge and umpire with the New South Wales Association. His appointment in March 1912 was one of the first joint actions of the newly formed Olympic councils; although Horniman was unopposed, A G de L Arnold, who acted as coordinating secretary for the various Olympic bodies, was diplomatic enough to clear the appointment personally with Basil Parkinson in Melbourne before announcing it.