Morison gained his Royal Aero Club aviators certificate (No.
In 1911 he entered the Daily Mail Circuit of Britain Air Race but failed to start.
[2] In May 1911 he was in a well publicized air-race with Graham Gilmour from Shoreham Aerodrome to the eastern boundary of Brighton at Blackrock, Morison taking the straight course passed the winning post one minute before Gilmour.
[5] Morison was promoted Temporary Major in the Royal Air Force when it was formed in 1918.
Morison rejoined the RAF in 1940 with a temporary commission for the duration of hostilities.