From the people who brought you Flight Through Entirety.

Season 5: Taranium Core

In a screenshot from the newly-recovered episode 3 of The Daleks' Master Plan, The Doctor and Steven are standing on the flight deck of the Spar.  The Doctor hands Steven an object, which might have originally been the taranium core of the Time Destructor, but which now seems to be his 500 Year Diary,  with the podcast logo on the cover.

Terry Nation was born on 8 August 1930 in Cardiff, and is most famous for being the creator of Doctor Who’s mortal enemy, the Daleks, and somewhat less famous for being the creator of Survivors (1975) and Blake’s 7 (1978).

Terry Nation started his career as a stand-up comedian, and wrote hundreds of comedy scripts for radio and television, including, famously, several episodes of Hancock (1963). However, it was his science-fiction adaptations in Out of This World (1962) that brought him to the attention of Doctor Who script editor David Whitaker.

Nation wrote the first four Dalek stories for the Hartnell Era — The Daleks (1963), The Dalek Invasion of Earth (1964), The Chase (1965), and The Daleks’ Master Plan (1966). After a seven-year absence from the show, Nation returned in 1973 with Planet of the Daleks (1973), and wrote three more Dalek stories after that — Death to the Daleks (1974), Genesis of the Daleks (1975), and Destiny of the Daleks (1979). He also wrote two non-Dalek stories — The Keys of Marinus (1964), and The Android Invasion (1976).

Apart from his involvement in Doctor Who, Nation was a prolific television writer, writing episodes for the sort of shows we ended up watching on Bondfinger, including The Persuaders!, The Saint, The Avengers, and The New Avengers. In 1980 he moved to Los Angeles, where he wrote scripts for MacGyver and A Fine Romance.

So productive was Nation’s writing career that people have sometimes been tempted to dismiss him as a hack. But Nation was a gifted professional writer who could be relied on to produce interesting ideas, compelling set pieces and exciting action sequences. In Season 5 of 500 Year Diary, we’ll be reclaiming the word hack, and finding new ways to respect Nation’s work not just as a scriptwriter but as someone with a credible claim to have laid the very foundations for what Doctor Who became.

Saturday 21 December 1963

The Daleks

Captures and Escapes and Reversals

Taranium Core, Episode 1
Sunday 16 August 2026

Doctor Who has barely even started when the writer of Episode Five shows up and decides to take the show in a whole different direction. That writer was Terry Nation, and that episode, or possibly the one after that, will change the world forever.

Taranium Core, Episode 1: Captures and Escapes and Reversals (The Daleks)

Recorded on Sunday 24 May 2026 · Download Captures and Escapes and Reversals (66.7 MB) · Transcript for Captures and Escapes and Reversals
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Saturday 11 April 1964

The Keys of Marinus

Splitting the Party up for No Reason

Taranium Core, Episode 2
Sunday 23 August 2026

Terry Nation has left the Daleks at home this week, but he’s still bristling with so many ideas that the TARDIS crew rush through no less than five mini-stories in six weeks, proving that while the sea-bathing on the planet Marinus is basically lethal, there’s still a lot there to keep the tourists occupied.

Taranium Core, Episode 2: Splitting the Party up for No Reason (The Keys of Marinus)

Recorded on Sunday 24 May 2026 · Download Splitting the Party up for No Reason (59.8 MB) · Transcript for Splitting the Party up for No Reason
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Saturday 21 November 1964

The Dalek Invasion of Earth

The Power of a Pair of Clutched Lapels

Taranium Core, Episode 3
Sunday 30 August 2026

This week, it’s our annual trip to post-apocalyptic 22nd-century London to see how David, Tyler and Jenny are getting on. Turns out, probably better than we let on last time.

Taranium Core, Episode 3: The Power of a Pair of Clutched Lapels (The Dalek Invasion of Earth)

Recorded on Sunday 7 June 2026 · Download The Power of a Pair of Clutched Lapels (56.0 MB) · Transcript for The Power of a Pair of Clutched Lapels
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Saturday 22 May 1965

The Chase

Pushed up in the Schedule

Taranium Core, Episode 4
Sunday 6 September 2026

This week, Adam Richard and Kevin Burnard join us for a picaresque and shoddily made romp through time and space, with Daleks, followed by a devastating emotional farewell.

Taranium Core, Episode 4: Pushed up in the Schedule (The Chase)

Recorded on Saturday 6 June 2026 · Download Pushed up in the Schedule (68.3 MB) · Transcript for Pushed up in the Schedule
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Saturday 9 October 1965

Mission to the Unknown

Solace and Succour

Taranium Core, Episode 5
Sunday 13 September 2026

In an isolated episode on a distant, inhospitable planet, the Daleks are fomenting an intergalactic conspiracy to overthrow the Solar System. And for arcane budgetary reasons, the Doctor isn’t there to stop them.

Taranium Core, Episode 5: Solace and Succour (Mission to the Unknown)

Recorded on Sunday 21 June 2026 · Download Solace and Succour (61.3 MB) · Transcript for Solace and Succour
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Saturday 13 November 1965

The Daleks' Master Plan

Choreography of the Daleks

Taranium Core, Episode 6
Sunday 20 September 2026

This week, we rashly decide to steal the Daleks’ favourite thing and run away, only to find ourselves pursued through time and space for three months, during which time we visit Z Cars, the cricket, a volcano planet or something, and some of BBC Television Centre’s most lavish jungle sets. Toby Hadoke joins us to help us thwart The Daleks’ Master Plan.

Taranium Core, Episode 6: Choreography of the Daleks (The Daleks' Master Plan)

Recorded on Saturday 4 July 2026 · Download Choreography of the Daleks (105.4 MB) · Transcript for Choreography of the Daleks
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Saturday 7 April 1973

Planet of the Daleks

The Back End of the Daleks

Taranium Core, Episode 7
Sunday 27 September 2026

This week, Jeremy Radick joins us for a desperate mission to a low-effort jungle planet somewhere in the northern reaches of Shepherd’s Bush, as Terry Nation tries to reclaim the glory days when Dalek stories took place on a more modest scale — full of incident and thrilling action sequences, but shot in a studio that had once hosted episodes of Morecambe and Wise.

Taranium Core, Episode 7: The Back End of the Daleks (Planet of the Daleks)

Recorded on Sunday 16 August 2026 · Download The Back End of the Daleks (69.8 MB) · Transcript for The Back End of the Daleks
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Saturday 23 February 1974

Death to the Daleks

Goon Daleks

Taranium Core, Episode 8
Sunday 4 October 2026

It’s Doctor Who at its most typical this week, as a stranded space expedition is sufficiently beset by natives and Daleks to fill four episodes with daring sacrifices and human escapes until the generically mandatory explosion comes along to set everything to rights.

Taranium Core, Episode 8: Goon Daleks (Death to the Daleks)

Recorded on Sunday 19 July 2026 · Download Goon Daleks (64.7 MB) · Transcript for Goon Daleks
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