Seb was raised in the Rhondda valley, south Wales, and originally read music at London University - but changed direction to study acting at RADA, winning the Robert Donat prize for classical acting upon graduation.
After 15 years of performing leading roles in major UK theatres and companies (including the National Theatre and Royal Shakespeare Company) he became a teacher and director.
In the former capacity he has been Head of Acting and Director of BA Acting at both RADA and Drama Centre London. He has also been a freelance acting teacher/project director/workshop leader @ the Royal Academy of Music, Institute of Arts Barcelona, Royal College of Music, Manchester School of Theatre, The Globe Theatre, Welsh College of Music and Drama, National Opera Studio, The Actors Centre, Beijing Central Academy of Drama, Vakhtangov Theatre Moscow, Birkbeck University, Trinity Laban, UNESCO and the BBC.
Recent UK productions as a theatre and opera director include: 'Dido and Aeneas' (Purcell) @ English Touring Opera; 'Therese Raquin' (Zola), 'Ladybird' (Sigarev), 'A Bright Room Called Day' (Kushner),' The Illusion' (Corneille/Kushner) @ Southwark Playhouse; 'Bloody Poetry' (Brenton), 'Mysteries' (Anon), 'Cleansed' (Kane), 'La Dispute' (Marivaux) @ RADA; 'Electra' (Sopholcles/Payne), 'After Troy' (Glyn Maxwell) @ Drama Centre; 'A Waste of Time' (Proust), 'Earthquakes in London' (Mike Bartlett) @ MST; 'La Voix Humaine' (Poulenc/Cocteau) @ London Southbank Centre;' Eugene Onegin' (Tchaikovsky) @ Bury Court; and 'Dreamlives/Traumleben' (Schoenberg) @ Leeds Lieder.