Taking over the role of an iconic character is a difficult task, but Tim Treloar has made it look easy with his acclaimed audio portrayal of the Third Doctor, as originally played on TV Doctor Who by Jon Pertwee. 

After a small role in 2013’s The Light at the End, Tim’s first full adventure as the velvet-clad Time Lord was in 2015’s The Third Doctor Adventures Volume 01. Across the decade since, he has starred in 16 volumes of Third Doctor Adventures, and materialised across various other Doctor Who releases. His latest box set, Doctor Who and the Brain Drain, is released today. 

To mark ten years of his performance as the Third Doctor, we asked some of his colleagues to reflect on Tim’s time in the TARDIS so far... 

Daisy Ashford, who plays Liz Shaw, said: “Working with Tim is exciting, invigorating, annoying, loud, relentless, joyful, hilarious. He’s lovely. I love Tim.” 

Jon Culshaw, the voice of the Brigadier, said: “My first time with Tim as the Third Doctor was about five years ago. Primord was the story. And it was a glorious, glorious experience. Tim Treloar is a fabulous tumbling ball of energy to work with, and with such a melodic, rich, resonant portrayal of Jon Pertwee. Working with him is so full of laughter and good camaraderie. The sense of great friendship and happy chaos never gets in the way of doing the job, but energises it. Five years have just gone like that.” 

And Nicholas Briggs, who has directed Tim throughout The Third Doctor Adventures, said: “Tim Treloar as the Third Doctor – he’s kind of my fault. It was my idea to cast him and I had to take responsibility and direct him. And I’ve been directing him in The Third Doctor Adventures ever since. It’s been a roller coaster. It’s lots of fun. I really like him and he just gets better and better, which is probably why he’s one of our most popular Doctors.” 

Doctor Who – The Third Doctor Adventures: Doctor Who and the Brain Drain is now available to own as a collector’s edition CD box set (+ download for just £24.99) or a digital download only (for just £19.99), exclusively here. Please note: the collector’s edition CD box set is strictly limited to 1,500 copies and will not be repressed. 

A newly exiled Doctor accompanies Liz Shaw and the Brigadier to a symposium held in an imposing Scottish castle. Professor MacLeod and her son have developed a new treatment for memory loss and a possible cure for dementia. 

As the Doctor investigates sightings of strange mythical creatures, and ghosts are unleashed in the castle’s corridors, Liz and the Brigadier search for a connection. 

Just what is happening to the energy produced by the MacLeods’ revolutionary treatment? And what is the strange creature that hides in the castle grounds? 

Alongside Tim Treloar’s Third Doctor, this brand-new seven-part story stars Daisy Ashford as Dr Liz Shaw and Jon Culshaw as the Brigadier, and it’s written by Richard James and Nicholas Briggs. 

The guest cast includes Rosalyn Landor as Professor Abigail MacLeod, Callum Pardoe as Linus MacLeod, Susan Harrison as Dr Fiona Lynch/June Wellesley, Glen McCready as Professor Albert Heber/The Steward/Andrew Wellesley, Mark Elstob as Peter Macleod/Nelophex, and Milo Ratter as Crouch. 

Big Finish listeners can save money by purchasing Doctor Who and the Brain Drain in a bundle with 2025’s second Third Doctor Adventures box set (Title TBC), which is due for release in October, for just £47 (collector’s edition CD box set + download) or £38 (download only). 
  
Alternatively, listeners can buy this series as part of a bundle of all 15 Classic Doctor Who box sets released in 2025 for £335 (collector’s edition CD box set + download) or £275 (download only).   

All the above prices (including pre-order and multibuy bundle discounts) are fixed for a limited time only and guaranteed no later than 31 January 2025.

Please note that Big Finish is currently operating a digital-first release schedule. The mail-out of collector’s edition CDs may be delayed due to factors beyond our control, but all purchases of this release unlock a digital copy that can be immediately downloaded or played on the Big Finish app from the release date.