After a short spell as an assistant nurseryman with Ceredigion County Council, Bernard joined ADAS (Agricultural Development and Advisory Service) at Pwllpeiran Experimental Husbandry Farm at Cwmystwyth in the Cambrian Mountains where he "enjoyed a career spanning over 30 years” working on a wide range of research and some consultancy projects in the agriculture and environmental sectors. The trials work he undertook involved animal husbandry, nutrition studies, breeding, animal health and welfare, and system studies in the hills and uplands. Following the withdrawal from the site in 2011 he spent approximately two years in the arable crop production team. He has published in scientific journals on various topics including
(1997) Stocking rate comparisons on semi-natural rough grazings in the Cambrian Mountains. In Grassland Management in the ‘Environmentally Sensitive Areas’
- (2000) The strategic use of feed blocks to manage sheep grazing in the uplands. In Grazing Management: The principles and practices of grazing, for profit and environmental gain, within temperate grassland systems.
(2002) The Impact of Environmentally Sensitive Areas Policy in Relation to Conservation and Farming Objectives in Conservation Pays?
- (2002) n-alkane concentration in semi-natural plant species found in upland areas of the UK
- (2008) Comparative diet selection by cattle and sheep grazing two contrasting heathland communities
He joined the Farmers’ Union of Wales policy team as a Land Use Policy Officer in April 2014.