Simon Guerrier is a British science fiction author and dramatist, closely associated with the fictional universe of Doctor Who and its spinoffs. Although he has written three Doctor Who novels, for the BBC Books range, his work has mostly been for Big Finish Productions' audio drama and book ranges. Guerrier's earliest published fiction appeared in Zodiac, the first of Big Finish's Short Trips range of Doctor Who short story anthologies. To date, his work has appeared in the majority of the Short Trips collections. He has also edited three volumes in the series, The History of Christmas, Time Signature and How The Doctor Changed My Life. The second of these takes as its starting-point Guerrier's short story An Overture Too Early in The Muses. The third anthology featured stories entirely by previously unpublished writers. After contributing two stories to the anthology Life During Wartime in Big Finish's Bernice Summerfield range of books and audio dramas, Guerrier was invited to edit the subsequent year's short story collection, A Life Worth Living, and the novella collection Parallel Lives. After contributing two audio dramas to the series, Guerrier became the producer of the Bernice Summerfield range of plays and books, a post he held between January 2006 and June 2007. His other Doctor Who work includes the audio dramas, The Settling and The Judgement of Isskar, in Big Finish's Doctor Who audio range, three Companion Chronicles and a contribution to the UNIT spinoff series. He has also written a play in Big Finish's Sapphire and Steel range. Guerrier's work is characterised by character-driven humour and by an interest in unifying the continuity of the various Big Finish ranges through multiple references and reappearances of characters. As editor he has been a strong promoter of the work of various script writers from the Seventh Doctor era of the Doctor Who television series

David James Bishop is a New Zealand screenwriter and author. He was a UK comics editor during the 1990s, running such titles as the Judge Dredd Megazine and 2000 AD, the latter between 1996 and the summer of 2000. He has since become a prolific author and received his first drama scriptwriting credit when BBC Radio 4 broadcast his radio play Island Blue: Ronald in June 2006. In 2007, he won the PAGE International Screenwriting Award in the short film category for his script Danny's Toys, and was a finalist in the 2009 PAGE Awards with his script The Woman Who Screamed Butterflies. In 2008, he appeared on 23 May edition of the BBC One quiz show The Weakest Link, beating eight other contestants to win more than £1500 in prize money. In 2010, Bishop received his first TV drama credit on the BBC medical drama series Doctors, writing an episode called A Pill For Every Ill, broadcast on 10 February.

Joseph Lidster is an English television writer best known for his work on the Doctor Who spin-off series Torchwood and The Sarah Jane Adventures. His debut work was the audio play The Rapture for Big Finish Productions in 2002. Numerous further audio plays and prose short stories followed for Big Finish, for their Doctor Who line, spin-offs and other series (Sapphire & Steel and The Tomorrow People). In 2005, he started working for the BBC, writing tie-in material for the new Doctor Who television series. He made his television writing debut in 2008 on the second series of Doctor Who spin-off Torchwood and subsequently wrote three two-part stories for The Sarah Jane Adventures. He has written the two-part story "Rebel Magic" for the new CBBC series Wizards vs Aliens. Lidster wrote the content for the tie-in websites relating to the fictional world of the television series, Sherlock. Alongside co-producer James Goss, he has produced Big Finish Productions' dramatic reading range of Dark Shadows audio dramas since 2011. In 2012, he won the 'Audience Favourite Writer' award for his first play Nice Sally in the Off Cut Theatre Festival.

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.