Gregg is 31 and a Cumbernauld man from Kildrum. The former Cumbernauld High School pupil currently teaches history at Oxford University. Gregg has been active in the party for many years and has penned speeches for Dr John Reid.
He said: "I'm pleased. It is great to have the trust of local members - especially as I am from Cumbernauld and know so many of the people involved. At the same time I don't feel I can take anything for granted and will campaign on issues relating to social justice".
After winning a scholarship to the University of Pennsylvania he has been based in Oxford since his return. "Although I have lived there for years, I have never really considered Oxford my home - it's Cumbernauld. In that very Scottish way".
Rosemary McKenna said: "I am absolutely delighted that Gregg has been selected to fight the Cumbernauld, Kilsyth and Kirkintilloch East Westminster Parliamentary seat for the Labour Party. He will work with the local party till the General Election to build on the 11,000 plus majority we achieved at the last election".