Kwong trained at the Guildhall School of Music and Drama, and works as actor, director and lecturer in performance. His theatre work includes The Great Wave (National Theatre), Pah-la (Royal Court) Labour of Love (Noel Coward, West End), Dear Elizabeth (Gate Theatre Nottinghill), New and Now (Royal Court), You For Me For You (Royal Court), You Never Touched Dirt (Royal Court at Edinburgh), The Lulu Plays (Almeida Theatre), Hiawatha (Bristol Old Vic), ), Summer Rolls (Rich Mix and BOV), Global Baby Factory (Yellow Earth Theatre, The Changeling (Finborough Theatre), Rashomon, Scenes from Paradise (Riverside Studios), The Magic Paintbrush, The Snow Lion (Polka Theatre), Blue Remembered Hills (UK Tour), Tibetan Inroads (Gate Theatre), Two Gentlemen of Verona (Singapore Drama Centre), TheSoldier’s Tale (South Bank).
For television, Kwong appeared in Gangs of London (HBO-SKY) and The Feed (ITV Amazon). Radio includes: At Sea on Inya Lake, Another Land, Our Father the Mountain, Joy Luck Club.
He was a founder member of New Earth Theatre, which champions East/SE Asian work and practitioners, and frequently runs acting workshops in Japan.