Holly Unwin is a Survey Geologist at the British Geological Survey. She specialises in the geology of the UK, with a focus on geological fieldwork and mapping, and the communication and visualisation of geological data to meet the needs of a wide range of stakeholders. Holly has particular interests in the igneous rocks of the UK and Iceland, urban geology, and geosystem services.

Holly has a background in volcanology and completed a PhD on silicic volcanic systems at Lancaster University, in collaboration with BGS. Her research integrates fieldwork, rock physics, and microstructural analysis to improve understanding of the processes recorded in ancient volcanic conduits.