Big Finish announces Fourth Doctor, Harry Sullivan and new companion Naomi for 2024

Chris Naylor, Tom Baker, Eleanor Crooks aka Harry, the Doctor and Naomi

Ahead of this afternoon’s (1 Aug 2020, from 4pm UK time) Virtual Big Finish Day, we’ve details of a new companion for the Fourth Doctor, Naomi (Eleanor Crooks) and the return of Harry Sullivan (Chris Naylor). And Sea Devils!

All the details so far are below. Rumour has it we may hear from Naomi before 2024…

Harry, Naomi and the Fourth Doctor

Today’s Virtual Big Finish Day will see the unveiling of a new TARDIS team for Tom Baker’s Fourth Doctor as Eleanor Crooks is introduced as companion Naomi Cross.  

Set to join full time during the Fourth Doctor’s thirteenth series of full-cast audio dramas, Naomi is an impetuous UNIT secretary eager to earn her stripes; top of the class, trained in karate, and very bored of pen-pushing in a London office.  

But when she takes an assignment to “babysit” Surgeon-Lieutenant Harry Sullivan on an investigative trip to Calcutta, the confident but inexperienced Naomi soon encounters the thrills and spills she’s been seeking…  courtesy of a strange man who wears a long scarf and carries a sonic screwdriver.  

Series thirteen’s opening story will also mark a blockbusting return for a classic Doctor Who monster. Storm of the Sea Devils by David K Barnes revives the amphibious warrior reptiles, first seen on television in 1972, for another deadly conflict with humanity.  

Big Finish’s Creative Director, Nicholas Briggs, said:

“Naomi Cross has a really interesting route to the TARDIS, via the very old-fashioned Harry Sullivan. Almost all her reactions to space-time adventures are the complete opposite of what we’ve come to expect from a Doctor Who companion. And Ellie breathes fantastically energetic life into the role.” 

Actor Eleanor Crooks added:

“Naomi is very much like me. She’s very feisty and says what she wants to say. And her weakness, if you will, is that she’s quite headstrong. So it’s good that she has Harry there to balance her out a little bit.” 

Senior Producer, David Richardson, added:

“Naomi is a force of nature who hurls herself into the Doctor’s life. She’s a member of UNIT who has always been on the outskirts of the Doctor’s adventures – but at last she has the chance to throw herself into the centre of them! And she will learn that life is never simple with the Doctor…  

“Naomi has a huge character arc that will play out in the coming years at Big Finish, and you may meet her in unexpected places. Eventually the jigsaw of her life will come together…” 

Doctor Who fans can catch their first glimpse of Eleanor Crooks, discussing her impending role as the Fourth Doctor’s new friend, by joining Virtual Big Finish Day, on the Big Finish YouTube channel (at, which kicks off at 4pm (UK time) on Saturday 1 August.  

Each of the three volumes in Doctor Who: The Fourth Doctor Adventures – Series 13 will be released as a 3-disc collector’s edition box set or download containing brand-new full cast audio adventures for the Doctor, Harry and Naomi.  

Doctor Who: The Fourth Doctor Adventures – Series 13 is now available for pre-order exclusively at the Big Finish website (, from just £16.99.  

Big Finish listeners can save by pre-ordering a bundle of the entire series for just £54 (as a collector’s edition box set) or £48 (as a download).  

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