He topped the Premier Series a league Table after today's final round at Coil óg Equestrian Centre in Co.Kildare.
His wins in Cork and Tattersalls, along with two second place finishes in Balmoral and Coil óg contributed to his championship win.
Gregs second place finish at Coil Óg today came aboard the 8 year old mare Javas Keltic Mist (Irish Sport Horse).
"I am absolutely delighted to be named Irish National Champion and I have to pay tribute to the incredible owners of these wonderful horses that i am lucky enough to ride and also to all the team at Ballypatrick Stables who work so hard behind scenes to make this possible ".