Dr. Williams is a consultant clinical oncologist at Imperial College Healthcare NHS Trust, and leads the Computational Oncology Group at Imperial College. He holds a PhD in Computer Science, and has led several trials on near-patient sensing and wearables, and leads the GlioCova project looking at national brain tumour data and outcomes. He set-up and leads the UK national Optune support group. He is also the Chief Medical Officer for Pear-Bio, a techBio start-up that is developing a Functional Precision Medicine test for cancer patients (including glioma).