Prof Gillmore's primary focus is on human-environment interactions. Examples include measurement / monitoring of radon (a ground gas that causes lung cancer); 3D visualisation of alpha and neutron tracks in solid state nuclear track detectors; mining pollution; indoor and outdoor air pollution; palaeoenvironmental analysis; 3D imaging and analysis of PM10s and PM2.5s including volcanic ash and exhaust particulates; shale gas exploitation; the Energy Trilemma. He started his career as a researcher at the University of Bedfordshire followed by the Natural History Museum. This was followed by a time in the hydrocarbon industry. He returned to academia in 1993, as a Senior Lecturer (Geology) at the University of Northampton. This was followed by posts at the University of Bradford (Senior Lecturer, Head of Department, Geography and Environmental Science). In 2006 he started as Professor of Environmental Geoscience and Head of School, Geography, Geology and the Environment at Kingston University. This was followed by being Head of Kingston Energy and School Postgraduate Director of Research, Engineering and Environment and latterly head of Geography at Bath Spa University. He is now an Emeritus Professor from that University and a Visiting Researcher at Kingston University. He is also Chairman and Director of The Radon Council, Head Trustee and Director of the Museum of Bath Stone and Course Director for the A Rocha International Conservation Certificate.