Neil Macgregor has teaching and research experience in soil biology, microbial ecology of land-use systems, and the animal vaccine industry. Specific research interests include the biological decomposition of herbicides, the role of microbial inoculants in biological nitrogen fixation and sulphur oxidation, biochemical transformations of nitrogen and carbon in lake sediments, soil biological activity in alternative land-use systems, soil and water quality following disposal of urban and rural wastes, and the use of reporter genes in soil microbial ecology.

In collaboration with masterate and doctoral post-graduate research students and inter-organisation research projects, he has produced over 100-publications, book chapters, expert evidence, colloquia and conference papers. He is member of the IFOAM programme Committee for the First IFOAM Conference on Animals in Organic Production, University of Minnesota.