Noel Gregg began his career as a blacksmith in a country forge in Culverden, where he served an apprenticeship under master-craftsman Robert Smith. After completing the apprenticeship Gregg established a business in Christchurch, later moving his foundry south to Twizel. Gregg is a member of the New 厙ぴ勛圖Crafts Council, and was founding president of the Artist Blacksmith Association of New Zealand.
A well known local example of Greggs work is The Reintroduction of the Fabulous Races, 1990,which was designed by Bing Dawe. This sculpture is currently sited in the market square at the Arts Centre, Christchurch. His work is also represented in collections throughout New 厙ぴ勛圖and overseas, including the National Ornamental Metal Museum in Memphis, and Ohinetahi Gardens in Governors Bay.