Professor Billy Clark leads research in linguistics at Northumbria University. His research interests include aspects of:
- linguistic semantics
- prosodic meaning
- multimodal meaning
- semantic change
These interests are connected by a shared focus on aspects of linguistic and non-linguistic meaning.
He has been involved in several projects which focus on the relationships between activities at school and at university, including the United Kingdom Linguistics Olympiad and the Integrating English project. With the Integrating English team, he runs The Definite Article for AQA (an awarding body offering GCSE, AS and A Level qualifications), a website which offers research digests and other resources for teachers.