[4][5] Ormiston refereed his first Super 6 match on 14 December 2019 between Heriot's Rugby and Southern Knights.
[8] Ormiston has been Assistant Referee in the European Challenge Cup.
[13] He was Assistant Referee in the Romania v Belgium match on 10 March 2018 in the 2018 Rugby Europe Championship.
He was Assistant Referee in the Russia v Spain match on 10 March 2019 in the 2019 Rugby Europe Championship.
He was registered as a player for Gala Cricket club.