Nicholas Briggs is a British actor and writer, predominantly associated with the BBC science fiction television series Doctor Who and its various spin-offs. Some of Briggs' earliest Doctor Who-related work was as host of The Myth Makers, a series of made-for-video documentaries produced in the 1980s and 1990s by Reeltime Pictures in which Briggs interviews many of the actors and writers involved in the series. When Reeltime expanded into producing original dramas, Briggs wrote some stories and acted in others, beginning with War Time, the first unofficial Doctor Who spin-off, and Myth Runner, a parody of Blade Runner showcasing bloopers from the Myth Makers series built around a loose storyline featuring Briggs as a down on his luck private detective in the near future. He wrote and appeared in several made-for-video dramas by BBV, including the third of the Stranger stories, In Memory Alone opposite former Doctor Who stars Colin Baker and Nicola Bryant. He also wrote and appeared in a non-Stranger BBV production called The Airzone Solution (1993) and directed a documentary film, Stranger than Fiction (1994). Briggs has directed many of the Big Finish Productions audio plays, and has provided Dalek, Cybermen, and other alien voices in several of those as well. He has also written and directed the Dalek Empire and Cyberman audio plays for Big Finish. In 2006, Briggs took over from Gary Russell as executive producer of the Big Finish Doctor Who audio range. Briggs co-wrote a Doctor Who book called The Dalek Survival Guide. Since Doctor Who returned to television in 2005, Briggs has provided the voices for several monsters, most notably the Daleks and the Cybermen. Briggs also voiced the Nestene Consciousness in the 2005 episode "Rose", and recorded a voice for the Jagrafess in the 2005 episode "The Long Game"; however, this was not used in the final episode because it was too similar to the voice of the Nestene Consciousness. He also provided the voices for the Judoon in both the 2007 and 2008 series. On 9 July 2009, Briggs made his first appearance in the Doctor Who spin-off Torchwood in the serial Children of Earth, playing Deputy Prime Minister and Foreign Secretary Rick Yates.

George Mann is an author and editor, primarily in genre fiction. He was born in Darlington, County Durham in 1978. A former editor of Outland, Mann is the author of The Human Abstract, and more recently The Affinity Bridge and The Osiris Ritual in his Newbury and Hobbes detective series, set in an alternate Britain, and Ghosts of Manhattan, set in the same universe some decades later. He wrote the Time Hunter novella "The Severed Man", and co-wrote the series finale, Child of Time. He has also written numerous short stories, plus Doctor Who and Sherlock Holmes audiobooks for Big Finish Productions. He has edited a number of anthologies including The Solaris Book of New Science Fiction, The Solaris Book of New Fantasy and a retrospective collection of Sexton Blake stories, Sexton Blake, Detective, with an introduction by Michael Moorcock.

Richard is a writer for TV, comics and books. He is currently working on the TV show, Thunderbirds Are Go! and is a regular contributor to Titan's 12th Doctor ongoing comic - amongst other ranges. His new Doctor Who book, Myths & Legends is published in June 2017. In the past he has written audio drama scripts for franchises such as Doctor Who, Stargate, Sherlock Holmes and Sapphire & Steel. His first novel Alien Adventures was published by BBC Children’s Books in 2010 and he has since gone on to write books and short stories for Penguin UK, Titan Publishing, Black Library, Running Press and Snow Books.