Career
Johnston was a successful amateur, representing England boys and the Great Britain and Ireland team in the Jacques Léglise Trophy. After a 2010 season split between the Jamega Tour, the Professional Golf Association EuroPro Tour and invites to the Challenge Tour, Johnston enjoyed a breakthrough season in 2011. He played in his first European Tour event at the Alfred Dunhill Championship in South Africa, and qualified for his first major championship, the Open Championship, via local final qualifying at Royal Cinque Ports.
Johnston also recorded several good results from invites to the Challenge Tour, including a runner-up spot at the M2M Russian Challenge Cup.
That qualified him for the Grand Final, where he finished in a tie for third to jump to 15th in the standings and secure a place on the European Tour for 2012. Challenge Tour wins
Other wins
2009 The Warwickshire (Jamega Tour)
DNP = Did not play
CUT = missed the half-way cut
"T" = tied
Yellow background for top-10.
Amateur
Jacques Léglise Trophy (representing Great Britain and Ireland): 2007 (winners).