![](/IMAGES/Board/Rob Bradley.jpg?width=600)
Rob Bradley
Rob and his wife Jo and operate Bradley Agriculture, an extensive farming business in Northern Tasmania that includes an 850 cow dairy, prime lamb production and irrigated cropping of high value crops including seed carrots, peas and poppies. They are also partners in a 4,500 ha broad acre farming operation in northern NSW. Outside his own business Rob serves on two ‘Not for Profit Boards in his local community, Cressy Longford Irrigation Scheme and Toosey Aged Care, Longford. He also serves as a director on Dairy Farm Management Business. Awarded his scholarship in 2009, he studied the integration of livestock and cropping farming systems.
Board
![](/IMAGES/Board/Don Madden.webp?width=800&filter=greyscale)
Don Madden
Don Madden
Don Madden, a 2010 Nuffield Scholar, is co-owner and director of Smithfield Cattle Company, overseeing lot feeding, exports, logistics, and property management. A former QLD State Chair, he has shaped industry strategy through ALFA and pioneered the feedlot sector’s first Trainee Manager program.
![](/IMAGES/Board/Guy Hebblewhite.png?width=800&filter=greyscale)
Guy Hebblewhite
Guy Hebblewhite
Guy Hebblewhite, a 2013 Nuffield Scholar, joined the Nuffield Australia Board in 2024. He previously chaired Nuffield NSW and helped deliver the 2022 Tamworth National Conference. Formerly in chicken meat and Wagyu production, he is now developing an agri-marketplace and has held leadership roles in AgriFutures and ACGC.
![](/IMAGES/Board/Kara Knudsen.webp?width=800&filter=greyscale)
Kara Knudsen
Kara Knudsen
Kara Knudsen, a 2013 Nuffield Scholar from Mundubbera, QLD, runs a beef enterprise and is passionate about Australian agriculture. She has held key Nuffield volunteer roles in sponsorship, strategy, and events. Kara has shaped the beef industry through policy work, industry reviews, and leadership programs like AICD and WCF Agribusiness.
![](/IMAGES/Board/Johanna Tomlinson.webp?width=800&filter=greyscale)
Johanna Tomlinson
Johanna Tomlinson
Johanna Tomlinson, a 2019 Nuffield Scholar from WA’s South Coast, joined the Nuffield Board in 2024. She runs a beef enterprise with her husband and has held leadership roles in NRM, biosphere initiatives, and regional investment. A graduate of AICD and Rabobank EDP, she is dedicated to strengthening regional communities.
![](/IMAGES/Board/Nigel Corish.jpg?width=800&filter=greyscale)
Nigel Corish
Nigel Corish
Nigel Corish, a 2014 Nuffield Scholar from Goondiwindi, QLD, joined the Nuffield Board in 2023. As MD of New Leaf Ag, he farms 4,500ha of cotton, grains, and pulses. A graduate of AICD, he is Vice Chair of Grain Growers Ltd, a director of Cotton Seed Distributors, and Chair of Ability Agriculture.
![](/IMAGES/Board/ Donald McGauchie.jpg?width=800&filter=greyscale)
Donald McGauchie, AO
Donald McGauchie, AO
Donald McGauchie was appointed to the Nuffield Board in 2013 as a special skills external Director. He is Chairman of Nufarm Limited, AACo, and AWTA, with past roles including Chairman of Telstra and the Victorian Rural Finance Corporation. A former NFF President and Reserve Bank Board member, he was named Rabobank Agribusiness Leader of the Year in 2001 and awarded the Centenary Medal. In 2004, he was appointed an Officer of the Order of Australia.