After a few roles in television, Dean was cast as Small Boy in BILLY ELLIOT when he was 8, in the original cast of the show. He began training when he was 10 and went on to play Michael and then Billy in the production. He was the longest serving Billy and the second longest serving cast member. Credits include BB3's comedy series, CUCKOO, playing title role in THE REVOLTING WORLD OF STANLEY BROWN for CBBC and THE WHITE QUEEN for the BBC and Starz. Dean has most recently been seen in Rowan Joffe's BEFORE I GO TO SLEEP with Nicole Kidman, Colin Firth and Mark Strong, E4's critically acclaimed series, GLUE, RIPPER STREET for BBC1, the feature MAN UP with Simon Pegg and Lake Bell and series VI of GAME OF THRONES on Sky Atlantic. Dean can next be seen in Andy's Serkis' BREATHE with Andrew Garfield and Claire Foy which is opening the London Film Festival and Jaume Collet-Sera's THE COMMUTER with Liam Neeson.