William Gaminara (born 1956) is a Rhodesian-born British actor, screenwriter and playwright, probably best known for playing pathologist Professor Leo Dalton on the television series Silent Witness, from 2002 to 2013. His plays include According to Hoyle, The Three Lions and The Nightingales. Early life and education Gaminara was born in 1956 in Lusaka, Northern Rhodesia. He was educated at Winchester College, Hampshire, England, and Lincoln College at the University of Oxford. Career Actor and narrator Gaminara had a minor role in the 1986 film Comrades, directed by Bill Douglas. His early television credits include Dr Andrew Bower in Casualty (1989–92) and Will Newman in Attachments (2000–02). His most notable television role was Professor Leo Dalton in the BBC crime drama series Silent Witness. He played Dalton from 2002 until 2013, and reprised the role in 2017 in the final episode of series 20. The role was at first subsidiary to Sam Ryan, played by Amanda Burton, but when Burton left the series and Gaminara's character Dalton headed the laboratory, the drama evolved into a three-hander between Dalton, Harry Cunningham (Tom Ward) and Nikki Alexander (Emilia Fox). After leaving Silent Witness, Gaminara appeared in several theatrical roles. In 2014, he played the photojournalist Paul Watson in Dan O'Brien's The Body of an American, a two-hander with Damien Molony. Gaminara describes the play as a "challenging and unconventional script which makes challenging and unconventional demands of an actor". Lyn Gardner, writing in The Guardian, describes the acting as "knockout", with the "muscular quality of a contest" whilst being "scrupulously generous"; she highlights the way in which the two actors each embody a large number of characters and are required to swap between roles abruptly. The production was also praised by Dominic Maxwell in The Times for "superb" acting on the part of both leads. The following year, he played the lead character, Pastor Paul, in Lucas Hnath's The Christians at the Traverse Theatre during the Edinburgh Festival, giving a "superbly controlled performance", which "nails the slow, measured but warmly faux-colloquial rhetoric of the American church", according to a review in The Independent. Gardner, in The Guardian, describes Gaminara as "suggesting both the charisma and the arrogance" of his character, and Dominic Maxwell, in a review for The Times, considers that Gaminara "propels it all with conviction". Also in 2015, Gaminara took the supporting role of General Groves in the premiere of