Departmental Scientists Hugh Bayley To ask the Secretary of State for Environment, Food and Rural Affairs how many (a) scientific advisers and (b) civil servants in scientific posts there are in his Department. Dan Norris The Department for Environment, Food and Rural Affairs (DEFRA) has a chief scientific adviser, Professor Robert Watson. DEFRA does not hold data on the number of scientific posts it has in the department and these data could be collated only at disproportionate cost.