Gavin grew up on his family farm on the edge of King's Lynn in Norfolk. At 25, he started farming on a contract farming arrangement with his father and now owns and farms land on two separate arable farms in Norfolk, both with large countryside stewardship schemes and using regenerative farming practices. He is involved with a family residential property portfolio and with his wife, Jane, has diversified into a holiday cottage letting business. Within the CLA, he was chair of BREC, chair of the Norfolk Branch and was previously chair of AG and LU and also sat on Policy Committee.
Away from the farm, he has chaired the Education Committee of the Worshipful Company of Farmers and is a Nuffield Scholar.