Is is Davis or Davies? It seems to be Davis for Class, at least.
Talk about it here.
Paul Marc Davis played the Futurekind Chieftain in the Doctor Who television story Utopia, the Trickster in The Sarah Jane Adventures television stories Whatever Happened to Sarah Jane?, The Temptation of Sarah Jane Smith and The Wedding Of Sarah Jane Smith, and a Cowled Ghost in the Torchwood television story Exit Wounds [1], and voiced Pepé Gonzalez in the Big Finish Doctor Who audio story The Gift.
He also appeared as Corakinus in the Class television stories For Tonight We Might Die, Co-Owner of a Lonely Heart, Brave-ish Heart and The Lost, giving him the unique distinction of being the only actor to appear in all three BBC Wales spin-offs, as well as Doctor Who itself.