The Sixth Doctor (Colin Baker) is joined in his travels by Mrs Constance Clarke (Miranda Raison) – a member of the Women’s Royal Naval Service he met in World War Two-era England – for his latest set of three audio adventures. 

These brand-new stories follow the Doctor and Mrs Clarke as they encounter old enemies and friends, as well as some new ones, across the stars and back in time. First, the TARDIS takes them to a forest planet where a most unusual Dalek (Nicholas Briggs) acts as the local storyteller. 

They then travel to thirteenth-century Baghdad, where the Doctor is reunited with Marco Polo  (Terry Molloy) and falls prey to the body-swapping schemes of fellow time-traveller Iris Wildthyme (Katy Manning). And in the third story, an alien creature creates ravenous duplicates of Constance. 

Doctor Who – The Sixth Doctor Adventures: The Cosmos and Mrs Clarke is available to purchase now from just £19.99 (download to own) or £24.99 (download to own + collector’s edition CD) exclusively here. Please note: the collector’s edition CD box set is strictly limited to 1500 copies and will not be repressed. 

The three new stories for the splendid Sixth Doctor are: 

The Story Demon by Julian Richards 

The Doctor and Mrs Clarke find themselves on a forest world where human settlers shelter from the night in a village built from wrecked spaceships, living in fear of the Birnamen, creatures who raid their settlement leaving death in their wake. 

But are the Birnamen really to blame? Or does the truth lie with the villagers’ ‘Story Demon’, the hollow travel casing of a very familiar alien creature which they use to entertain their children…? 

The Key to Many Worlds by Paul Magrs 

The Doctor and Constance arrive in thirteenth century Baghdad and encounter an ageing and disenchanted Marco Polo. His adventures at an end, he has been ordered to transport a certain enchantress back to the Doge’s palace in Venice. The Doctor realises his danger too late, as his mind is swapped with that of the enchantress – the notorious Iris Wildthyme! 

Now clapped in irons and trapped in Iris’s form, the Doctor is dragged along in Marco’s caravan as it trails across the desert once more... and only Mrs Clarke can save him. 

Inconstancy by Ian Potter 

On the highly regulated colony world of Hoi, the Doctor is captured by the authorities and taken to the forbidden zone for ‘re-education’. Mrs Clarke escapes and discovers an amorphous being in hiding. This protean creature craves purpose and identity, and wants Constance to make it an instrument of her will. Desperate to rescue the Doctor, she agrees – and suddenly Hoi is threatened by a swarm of wild and ravenous Mrs Clarkes! 

The box set’s guest cast also includes Anthony Townsend, Carly Day, Cameron Johnson, Dominic Vulliamy, Oliver Senton, Lara Lemon, and Vivienne Rochester. 

Miranda Raison debuted as companion Constance Clarke in 2015’s monthly range adventure Criss-Cross, and was most recently heard in 2024’s box set The Quin Dilemma, which celebrated 40 years of the Sixth Doctor. 

Colin Baker said: “The relationship between the Doctor and Constance is a lovely one. She’s a sophisticated lady. When the Doctor bangs on about Shakespeare and art and music, she’s on his wavelength. Some of the other companions don’t know what he’s talking about – philistines! They are not master and servant or Doctor and companion – they are friends.” 

Miranda Raison added: “They’re quite like minds – they’re both quite literary, and enjoy living on a slightly higher plane in terms of art and literature. They’re like a very happily married couple, in a way – a couple who have a lot to talk about by the fireside! 

“For an actor, it’s always most fun to do episodes where the character has some sort of self-exploration or self-discovery. And Inconstancy has that as much as any for Constance. She really has to face her own demons.” 

A second Sixth Doctor Adventures box set (Title TBA) will follow later in 2025. Both can be pre-ordered together in a bundle from just £38 (download to own) or £47 (download to own + collector’s edition CD box set). 

Alternatively, listeners can buy this series as part of a bundle of all 15 Classic Doctor Who box sets released in 2025 from just £275 (download to own) or £335 (download to own + collector’s edition CD box set).  

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.