McLachlan first became involved in the dairy industry in 1989 when he became the managing director of Tenon Developments.
In 2000 he formed A2 Corporation, backed by Howard Paterson to license technology for testing, production and use of milk containing only the A2 beta casein protein and no A1 protein (primarily which the BCM-7 peptide is a variant of) in cows' DNA [REF].