Hilary has held many short-term contracts throughout the world, including: International Atomic Energy Agency and FAO programmes, external lecturing/examining, and drug company assignments. She was Scientific Director of the Assisted Conception Unit, Women's Hospital, Liverpool (1985-1995), Commonwealth Universities Fellow in Australia (1992) and has delivered DEFRA/EU Commission reports on use of Bovine Sommatotrophin (BST; 2005), and Oestradiol (2009) in food-producing animals. She has also participated in the UK Royal Society – Member of Parliament programme (2003) and the Experts panel on reproductive toxicity for the UK Health and Safety Executive (2006).
Hilary has been a Trustee (since 2001) and, until 2019, was Chairman of the charity Autism Together (900 staff supporting more than 1000 beneficiaries on the autism spectrum). She is married to a Cheshire dairy farmer and is the mother of another. Their commercial pedigree herd currently consists of approximately 160 black and white cows on 103 hectares, being milked by three robots on Lord Cholmondeley’s Estate in Cheshire, NW England.