Theatre credits include Notes from Underground (Paris; various venues/ London; Print Room at Coronet - Nominated for Best Male Performance; Off West End Awards); The Duchess of Malfi (Old Vic); The Little Dog Laughed (Garrick Theatre); Ghosts (Arcola Theatre - Nominated for Ian Charleson Award); A View From The Bridge (Duke Of York Theatre); The Sea (Theatre Royal Haymarket); The Good Family (Royal Court); Bash (Trafalgar Studios); The Comedy Of Errors (Tokyo Metropolitan Theatre).
Television credits include Marcella (ITV); Wolf Hall (BBC); Manhattan (Lionsgate); The Fear (Channel 4 - Nominated for Best Supporting Actor; BAFTA); The Hollow Crown - Henry IV (BBC); Great Expectations (BBC); Game of Thrones (HBO); Taking the Flak (BBC); Lewis (ITV); Doctor Who (BBC); The Devil's Whore (Company Pictures/HBO for Channel 4); Warriors (BBC); Robin Hood (Tiger Aspect/BBC); Vital Signs (Tiger Aspect/ITV); Holby City (BBC); The Bill (Talkback Thames); Pope Town (Channel X); M.I.T. (Thames Television); Goodbye Mr Chips (SMG/ITV); David Copperfield (BBC).
Film credits include Anthropoid (LD Entertainment /22h22/Lucky Man Films); The Theory of Everything (Working Title Films); The Riot Club (Pinewood Studios); Big Significant Things (UnCorked Productions) ; Narcopolis (T Squared Films); Closer To The Moon (Mandragora Movies); The Iron Lady (Film 4/Pathe); Jane Eyre (BBC Films/Focus Films/Ruby Films).
Radio credits include The Haunted Hotel; The Cazalets; Every Duchess in England; Chattering; The Killing (BBC Radio); Brother Francis; Oliver Twist (Radio Theatre).
Harry also co-created and performed in Supreme Tweeter; a satirical web series featuring Tamsin Greig; Maisie Williams and George R.R. Martin.