Dewi is currently researching Autobiographic Performances of Mental Illness as part of his PhD at Queen Mary University of London. His previous areas of research include Autobiography and Mental Illness, and Mindfulness and Performance: how mindfulness-based stress reduction can be used to improve performance practice.

Dewi, during his time working in the tourism industry, has also delivered research documents for industry leaders on a wide range of topics including Sir Winston Churchill, Doctor Who, Sherlock Holmes, the Royal Family, film and TV locations across the UK, William Shakespeare, and local histories of London, Cardiff, and Oxford.