Thomas is an assessment researcher with expertise in the design, development, and validation of large-scale assessments. He holds a PhD in language assessment and has worked across the public and private sectors, combining psychometric rigour with a strong focus on fairness, validity, and the responsible use of assessment data.
He joined the British Council in 2025, following several years as a psychometrician in the educational publishing industry, where he led projects on test development, statistical analysis, and assessment quality assurance.