Mat Irvine was born on 7 July 1948. He is a Technical Consultant and Visual Effects Designer who worked on television, primarily for the BBC, from the 1970s to the 1990s. As a Technical Consultant, Irvine worked on shows such as The Sky at Night, Tomorrow's World and, most recently, Robot Wars, on which he was hired as a technical consultant in 1998. As a Visual Effects Designer, Irvine worked on shows such as Rentaghost, Terry and June, Blake's 7, The Tripods, Edge of Darkness and To the Manor Born. He is perhaps best known for his work on Doctor Who, for which he was a Visual Effects Designer, from the 1970s to the 1980s. He is credited with building the first K-9 prop for the serial The Invisible Enemy. He was not told that it would be required beyond that story, thus the prop he designed was only capable of traversing the studio floor and proved useless when brought on location for subsequent stories. Irvine eventually built a second K-9 that could cover rougher ground. He occasionally operated the K-9 prop during filming. His connection with K-9 has continued. In 1981, Irvine served as Visual Effects Designer for the Doctor Who spin-off K-9 and Company. 

July 7th, 1948 in (Age 76)