593 Snakedance: Part Four

EPISODE: Snakedance: Part Four
OVERALL EPISODE NUMBER: 593
STORY NUMBER: 125
TRANSMITTED: Wednesday 26 January 1983
WRITER: Christopher Bailey
DIRECTOR: Fiona Cumming
SCRIPT EDITOR: Eric Saward
PRODUCER: John Nathan-Turner
RATINGS: 7.4 million viewers
FORMAT: DVD: Doctor Who - Mara Tales (Kinda / Snakedance)

"Now the Great Snake has come to claim his own. Who has the power to turn away his face? Which one of you has the strength to turn away? Who can protect us now?"

Tanha interrupts and questions the Doctor, which allows him to escape with Nyssa & Chela. The Doctor uses the crystal to summon Dojjen and, as the ceremony starts with a giant snake costume winding it's way through the market streets, the Doctor confers with Dojjen telepathically through the Snakedance ceremony. Lon breaks character from his role in the ceremony, smashing a fake crystal and takes the real one to place in the snake's mouth and as he does so all present are affected by the Crystal's power. The snake Tegan carries grows to giant size and feeds off the fear of the crowd. The Doctor uses his crystal to find the still point inside him and resists the Mara with Dojjen's telepathic help. He removes the great crystal, severing the Mara's power, killing the snake and freeing Tegan from the Mara's power.

Finally the Doctor gets to do something in this story, but it's very little and very late. He's a curiously inactive figure during this story.

It's this episode that the frequently seen clip of Martin Clunes is sourced from. It is a *VERY* silly costume!

We'd only caught glimpses of former director of antiquities Dojjen in episodes 1 & 3, with him being completely absent for episode two. He's more visible here, but only gets to interact with the Doctor, Nyssa & Chela in sequences prefilmed at Ealing. Dojjen is played by actor Preston Lockwood: it's worth a look at his CV on IMDB to see how much he's been in! He was Stephen Wentworth in 5 episodes of Tenko, Canon Pennyfather in Miss Marple At Bertram's Hotel, Coriakin in part 3 of The Voyage of the Dawn Treader, the College Chaplain in one of my favourite episodes of Inspector Morse Absolute Conviction, Francois in Agatha Christie's Poirot The Chocolate Box and plays Sir Watkyn Bassett's butler Butterfield in the Jeeves and Wooster episodes Totleigh Towers (or, Trouble at Totleigh Towers) and The Ex's Are Nearly Married Off (or, the Ties That Bind) . There's a couple of film roles on his CV that caught my eye: he's in Time Bandits as Neguy and as a Man at Concert in Electric Dreams.

Ambril’s Attendant, who's been in the previous episodes but is only clearly seen here, is Chris Holmes who was a U.N.I.T. Soldier in Day of the Daleks, a Guard in The Time Monster, a Miner in The Monster of Peladon, a Muto in Genesis of the Daleks, a Peasant, Traveller, Workman Peasant, Brother & Soldier in The Masque of Mandragora, a Time Lord in Invasion of Time, a Citizen in Full Circle and a Plasmaton in Time-Flight. He returns as an Orderly in Frontios, a City Person on Street in Attack of the Cybermen, a Native in Trial of a Time Lord Mysterious Planet and a Genius in Time and the Rani. In In Blake's 7 he was a Federation Trooper in The Way Back, a Prisoner in Space Fall & Cygnus Alpha, a Mutoid in Duel & Project Avalon, a Star One Technician in Star One and a Hi-tech Patient in Powerplay. He also is in A Perfect Spy episode 3 as the Second Reporter.

Brian Grellis , playing the Megaphone Man who's directing the ceremony was under makeup as the Vogan Sheprah in Revenge of the Cybermen and Safran in The Invisible Enemy.

Playing the Ceremonial Snake Holder in this episode we have Ray Lavender who was the Taran Wood Beast & a Gracht Guard in Androids of Tara, a Skonnan Elder in Horns of the Nimon and one of the Pangol Army in The Leisure Hive. In Blake's 7 he's a Guard in City in City at the Edge of the World. The DWAS Production file says he's in the first two episodes as well: now I know what he looks like I'll have to go back and see if I can spot him.

Likewise the DWAS Production file says that the two Demons are in the first two episodes as well: I certainly haven't spotted those costumes previously and with the masks I haven't a hope of IDing the actors elsewhere! However episode two did have a pair of young men enter the Fortune Teller's place together - are these the same actors? Demon 1 is Derek Holt who was also in Blake's 7 in The Way Back & Space Fall as a Prisoner. Demon 2 is Fred Redford who Visitor Lomon in The Leisure Hive, a Foster & Citizen in Keeper of Traken. and a Male Passenger in Time Flight.

There's some more extras in just this episode as part of the Crowd at the Caves.

Penny Lambirth was a member of the SRS Audience in Robot and a Peasant/Traveller/Female Guest in Masque of Mandragora She later plays a Crewmember in Resurrection of the Daleks, Citizen/Unbeliever in Planet of Fire and one of the City People in Street in Attack of the Cybermen.

Robert Smythe had been a Guard in Invasion of Time, a Guard in Creature from the Pit and a Citizen in Full Circle. He returns as the Police Constable in Mawdryn Undead, a Citizen/Unbeliever in Planet of Fire, a Gunruner in Caves of Androzani, a Jacondan Guard in The Twin Dilemma, a Guard in Vengeance on Varos, He'd been in Blake's 7 as a Federation Trooper in Weapon, a Crimo in Hostage, a Albian Rebel / Federation Trooper in Countdown, a Federation Trooper in Voice from the Past, a Customer / Gambler in Gambit and a Federation Trooper / Rebel in Rumours of Death. In Red Dwarf he plays Hermann Goering in Meltdown.

Rosemary Smith was a Castrovalvan Woman in Castrovalva. She was a barmaid in the second episode of Knights of God and played a Married Woman in the Sherlock (TV series) episode A Scandal in Belgravia.

Alan Talbot was in Black Orchid as a Cricketer/Spectator and returns in The Mark of the Rani as Tom. In the Timothy Dalton James Bond film The Living Daylights he is Koskov's KGB Minder.

Hazel Cave was in Time Flight as a Lady Passenger (45-50). In Monty Python's Flying Circus she was a Guest at Award Ceremony in It's a Living.

Dale Warren returns as a Resistance Fighter in Trial of a Timelord episode 8 while Patrick Shepherd later plays a Mercenary in Dragonfire.

Paul de Gallier, Alison Neil, Lee Fyles and Elaine Hopkins aren't in Doctor Who again and I haven't seen them in anything else.

The episode is decent enough and well made but it's nothing special. Lots of people like Snakedance but I just can't get into it. Of the two Christopher Bailey Mara tales I much prefer Kinda. The previous two stories in sequence - Time Flight & Arc of Infinity - had huge flaws whereas this one just leaves me cold.

The episode is actually missing it's ending in a 2 minute scene where a crowd congratulates The Doctor, Abril, Tanha & Lon apologise for disbelieving the Doctor and The Doctor tells them it's their decision as to if they should destroy the Great Crystal

Snakedance was novelised by Terrance Dicks in 1984. It was released on video in December 1994, just after it's prequel Kinda. Both stories were released on DVD in the Doctor Who - Mara Tales boxset on 7th March 2011.

592 Snakedance: Part Three

EPISODE: Snakedance: Part Three
OVERALL EPISODE NUMBER: 592
STORY NUMBER: 125
TRANSMITTED: Tuesday 25 January 1983
WRITER: Christopher Bailey
DIRECTOR: Fiona Cumming
SCRIPT EDITOR: Eric Saward
PRODUCER: John Nathan-Turner
RATINGS: 6.6 million viewers
FORMAT: DVD: Doctor Who - Mara Tales (Kinda / Snakedance)

"He's not important. Only the Great Crystal is important. I need the Great Crystal!"

Nyssa tries to rescue the Doctor as Lon tries to convince Ambril to use the great crystal in the ceremony, using the unearthed artefacts to coerce him. Chela takes The Doctor some Dojjen's writing which convinces the Doctor that the crystal is important. Nyssa is found searching Dojjen's disc and imprisoned with the Doctor. Lon takes a blindfolded Ambril to the caves and ensures his co-operation by telling him that he'll never see the artefacts again. The Doctor works out the crystals are man made and created the Mara by absorbing the evil impulses from their users. Ambril lets slip the Doctor was asking about the crystals so the Mara controlled Tegan orders him killed. Ambril announces Lon will take part in the ceremony using the great crystal. A worried Chela frees the Doctor & Nyssa, but they are apprehended by Lon in the corridor and orders them killed.

The Doctor spends an episode in a cell thinking. And that's about it. Nyssa's not in it much, Tegan's hardly in it all it's mostly Martin Clunes strutting his stuff trying to force Ambril's co-operation. Something of nothing really.

Ambril's fall is rather set up by Chela reading from the still barely seen Dojjen's writings:

CHELA: Where the winds of restlessness blow, where the fires of greed burn, where hatred chills the blood, here in the Great Mind's Eye, here in the depths of the human heart, here is the Mara.

It's a relatively easy task for the possessed Lon to reel him in:

AMBRIL: My Lord, I am bound by an oath. An oath I had to swear on taking office. An oath dating back to the time of the destruction of the Mara.
LON: But you do know where the Crystal is.
AMBRIL: Oh, my Lord, not even the Federator himself may see the Great Crystal, though I am gratified by your awakened interest.
LON: Well, you know how it is. With time on one's hands, one pokes around. Surprising, really, what one can turn up.
AMBRIL: Yes.

AMBRIL: Where did you find it? Oh, my Lord, I'm sorry, but you understand what a discovery like this means to me.
LON: Is it valuable?
AMBRIL: Beyond price.
LON: And rare?
AMBRIL: It's unique, my Lord.
LON: How strange. As far as I could see, they did seem to be scattered around rather.
AMBRIL: Scattered? They? How many?
LON: I didn't count them.
AMBRIL: Many, though? Many? Lots? My Lord, tell me!
LON: Perhaps you'd like me to show you where they are.

The chances are if anyone has seen any of a Peter Davison story it's a bit on Snakedance. Why? Because it's the first major TV role for Martin Clunes, playing Lon, who has gone onto general fame via Men Behaving Badly and Doc Martin. By the time 1983 had drawn to a close he'd found regular work in No Place Like Home and a few years later I can remember him as Barmy Fotheringay-Phipps in Jeeves & Wooster.

Lon's mother Tanha is played by Colette O'Neil. I've never seen her in anything else but she was in one of the wife's favourites, Shetland not long before her death

Ambril is played by John Carson. He has a rare double on his CV appearing in both Out of This World as Roger Carter in Impostor and Out of the Unknown as Allen Meredith in This Body Is Mine. That episode is one of the few colour episodes that exists and can be seen on the Out of the Unknown DVD Set.

Brian Miller, playing the hall of mirrors owner Dugdale, is the husband of Elisabeth Sladen who played Sarah-Jane Smith. This is his first Doctor Who, but he'll be back in Resurrection of the Daleks and Remembrance of the Daleks as a Dalek voice as well as making an appearance in the Sarah Jane adventures opposite his wife.

They aren't the only Husband & Wife to both appear in Doctor Who by any means. Caroline John (Companion Liz Shaw) appeared opposite her husband, Geoffrey Beevers in Ambassadors of Death with Beevers becoming the third Master in Keeper of Traken. Tom Baker (the Fourth Doctor) did 2 years acting alongside his future and now ex-wife Lalla Ward (Romana II). We've just seen future Doctor Who Colin Baker for the first time: his ex-wife Liza Goddard will be along shortly. Finally, as widely documented, tenth Doctor David Tennant met his wife Georgia Moffett (Peter Davison's daughter, not born at the point this episode was made) on the set of the Doctor Who story "The Doctor's Daughter".

The heard but not seen Puppeteer at the Punch & Judy show is Barry Smith who was the partner of Alan Judd who played Dortmun in Dalek Invasion of Earth.

A number of children are in the audience of the show: Daniel Chamberlain, Cassie Shilling, Taba Bura, Nicola Appleby and Maxine Jeffrey all appear only in this episode.

Jamie Farrar & Cye Humphries, the two children on the right, are both in the next episode as well.

591 Snakedance: Part Two

EPISODE: Snakedance: Part Two
OVERALL EPISODE NUMBER: 591
STORY NUMBER: 125
TRANSMITTED: Wednesday 19 January 1983
WRITER: Christopher Bailey
DIRECTOR: Fiona Cumming
SCRIPT EDITOR: Eric Saward
PRODUCER: John Nathan-Turner
RATINGS: 7.7 million viewers
FORMAT: DVD: Doctor Who - Mara Tales (Kinda / Snakedance)

"Look, all I want's a little information. What possible harm is there in that?"

Nyssa is sent to search for Tegan but, although she finds her briefly, Tegan goes to hide in Dugdale's hall of Mirrors where she confronts the Mara within her. The Doctor goes to see Ambril, the Director of Historical Research, who isn't helpful and throws the Doctor out but his assistant Chela supplies the Doctor with a Crystal, as used by the Snakedancers, which may have some relation to the great crystal the director keeps that was removed from the Mara's cave. The Doctor attempts, and eventually manages to persuade the crystal to respond telepathically. He goes to seek Ambril out again but Ambril has him arrested and flung in a cell. Tegan has Dugdale take her too the Mara's cave, but discovers the crystal missing. They summon Lon, who the Mara possesses, and reveal a hidden chamber in the cave containing archaeological treasures which the Mara controlled Tegan & Lon will use to force Ambril to bring the great crystal to the cave for use in the forthcoming ceremony to commemorate the Mara's banishment.

Some nice imagery here again with Tegan arguing with a version of herself with a snake's skull for ahead, and some great acting by Janet Fielding as the possessed Tegan.

The Doctor's first meeting with Ambril does not go well:

AMBRIL: Now take this, for example. It dates from the middle Sumaran era and unusually is mentioned quite specifically in the Legend. Oh, there can be no doubt. The reference is to the Six Faces of Delusion. Now count. One, two, three, four, five. You will observe there are five faces, not six as the Legend would have it. Now, my point is this. I do find it quite extraordinarily difficult to take seriously a Legend that cannot even count accurately. Of course, artistically speaking, it's an entirely different matter. The piece is exquisite. An undoubted masterpiece.
DOCTOR: What is it?
AMBRIL: Hmm? Headdress.
DOCTOR: Try it on.
AMBRIL: What?
DOCTOR: Try it on.
AMBRIL: Certainly not. Whatever for?
DOCTOR: Please. I want to show you something, then I'll go and leave you in peace.
AMBRIL: Very well.

AMBRIL: Well?
DOCTOR: Now, count the faces again.
AMBRIL: Do as he says.
CHELA: One, two, three, four, five.
DOCTOR: And one makes six. The sixth Face of Delusion is the wearer's own. That was probably the idea, don't you think?
AMBRIL: Get out! Go on, get out!

The scene says an awful lot about Ambril and his close mindedness.

As well as Martin Clunes, playing Lon, there's another young actor in this story who's gone on to wider recognition: Jonathon Morris who plays Chela. By this point he'd already been in the Douglas Camfield directed Beau Geste amongst others but was a few years away from gaining national recognition as Adrian Boswell in Bread.

But oddly when I watch this neither of them jump out at me as being exciting. No. That's because I know that Lon's bodyguard is comedian, TV presenter and former GLR late night DJ Bob Mills. I know none of you will have ever heard of him (unless you watched In Bed with Medinner or Win, Lose or Draw) but that radio show he did was fabulous. I've still got odd things I won off that show for knowing rubbish including that Millsy himself had been in Doctor Who. IIRC he'd asked a question about what connected Brian Cant, Chris Tranchell & Chloe Ashcroft and knowing the answer got me on the air!

Tanha’s Bodyguard is played by regular extra at this time Barney Lawrence who had been a Marshman in Full Circle, a Guard in State of Decay, a Foster in Keeper of Traken, the 2nd Kinda Hostage in Kinda, the Male Android Silhouette in Earthshock and Air Steward Dave Culshaw in Timeflight, He goes onto play a member of Striker's crew in Enlightenment, a Marine Guard in Warriors of the Deep, and a Trooper in Resurrection of the Daleks. He was in Blake's 7 as a Federation Trooper in Time Squad & Bounty, a Guard in Traitor and Zukan's Technician in Warlord.

We have several long standing extras amongst the guests at the party & dinner, who the paperwork labels as "worthies"

Jean Channon first appeared in Doctor Who as a Parisian Woman in The Massacre. She then plays a Passenger/Plague Victim/Passersby in The Silurians, Hilda, the girl in the Lotus Position in The Green Death, a Masquer in The Masque of Mandragora, a Passser By and one of Audience/Dancing Girls/Stagehands in The Talons of Weng-Chiang, a Passenger in Nightmare of Eden and a Castrovalvan in Castrovalva. She returns as a Lazar in Terminus and then in the very last story of the original series as the Woman at Telephone in Survival. In Blake's 7 she is a Zondawl Citizen in Warlord.

Sheila Vivian was a Control Room Assistant in Ambassadors of Death, Female Guest in Masque of Mandragora, a Citizen in Keeper of Traken and a Castrovalvan Woman in Castrovalva. She was in Doomwatch as a Woman in Burial at Sea.

Derek Hunt had been an Atlantean Guard in Underwater Menace, a British Soldier in No Man's Land, British Soldier in The War Games, a Regular Soldier in Spearhead from Space, a Unit Soldier in the Silurians, a Technician in Inferno, a UNIT Man in Day of the Daleks, a Prison Guard in Frontier in Space, a Guard in Planet of Spiders, an Android Mechanic & Android Soldier in Android Invasion, a Bi-Al Member in Invisible Enemy, a Time Lord in Invasion of Time, a Technician/Guard/Citizen in The Ribos Operation, a Passenger in Nightmare of Eden, and James the Footman in Black Orchid. He returns as a Guard in Planet of Fire and a Time Lord in all 14 episodes of Trial of a Timelord: we know he's an Orange Time Lord in Terror of the Vervoids & The Ultimate Foe so assume he's wearing the same colours the whole story.

Brian Moorehead was an extra in Robot, a Guard in State of Decay and a Gundan in Warriors' Gate. He's in Blake's 7 as a Hooded Figure in Cygnus Alpha and a Federation Officer in Trial. He was previously in Quatermass II as the 1st Guard in The Mark and a Paratrooper in The Destroyer.

590 Snakedance: Part One

EPISODE: Snakedance: Part One
OVERALL EPISODE NUMBER: 590
STORY NUMBER: 125
TRANSMITTED: Tuesday 18 January 1983
WRITER: Christopher Bailey
DIRECTOR: Fiona Cumming
SCRIPT EDITOR: Eric Saward
PRODUCER: John Nathan-Turner
RATINGS: 6.7 million viewers
FORMAT: DVD: Doctor Who - Mara Tales (Kinda / Snakedance)

"I'm still possessed, aren't I, Doctor? The Mara from the world of the Kinda is still inside my head somewhere, isn't it?"

In the Tardis Tegan suffers tormented dreams of a cave with a snake mouth. The Doctor realises she has subconsciously set the Tardis co-ordinates for Manussa, the former homeworld of the Sumaran empire. Manussa still celebrates the banishing of the Mara from their world, but few now believe the legend of the return of the Mara from a dream. Rigging a device to cut out the dream's influence on Tegan, the Doctor & Nyssa take her to find the cave but she will not enter. The Doctor does and encounters the wife & son of the Federator, Tanha & Lon, being given a tour of the caves by Ambril, the Director of Historical Research. Ambril does not believe the Doctor's story that the Mara is trying to return through his companion and when he takes them to see Tegan they find her gone, having fled into the market when scared by a hawker selling toy snakes. She is taken in by a fortune teller who removes the Doctor's device. As the teller looks into her Crystal Ball a snake's skull appears and grows with the crystal ball shattering and the Mara assuming full control of Tegan.

Yeah that wasn't too bad at all, far better than the last eight episodes. OK Lon is annoying but I think he's meant to be. The dream stuff is nice, and reminiscent of the earlier Mara tale, Kinda, and the snake skull in the crystal ball, which then explodes is a very nice image. But who on Earth came up with Nyssa's new costume? That's the worst one I've seen since Sarah-Jane's Andy Pandy outfit in Hand of Fear. Fortunately it isn't around for long!

But, you say, didn't we see the Mara destroyed on Deva Loka in Kinda? How come it's still here now? Here's two possible solutions: either it left something in Tegan's mind when it left her to go to Aris OR it re-entered Tegan at the point she peaked inside the ring of mirrors (go back and have a look, she does) towards the end of the episode.

There's an episode later on which barely features anyone beyond the main cast so we'll look at them here. There's a couple of actors that only appear in this episode. Playing the Hawker who scares Tegan with the toy snake is George Ballantine who was a Prisoner & Audience Member in Mind of Evil, Android Villager in Android Invasion, Federico’s Servant in Masque of Mandragora, a Death Grade in The Sunmakers a Logopolitan in Logopolis and a Castrovalvan Man in Castrovalva This is his last Doctor Who appearance.

The Fortune Teller is Hilary Sesta. She appears in Jeeves and Wooster as Emmeline in Bertie Takes Gussie's Place at Deverill Hall (or, Right Ho! Jeeves) and Jonathan Creek as the Bag Lady in Mother Redcap.

There's A LOT of extras in the Crowd in the Marketplace. A LOT!!!! So in order of first appearance on the show we have:

Mark Allington who had worked on the show the longest, first appearing as a Male Guardian in The Ark then a Settler in The Gunfighters and, after a considerable gap, a Unit Soldier in The Android Invasion then after another smaller gap a Castrovalvan Warrior in Castrovalva. He returns as a Schoolmaster in Mawdryn Undead. In Blake's 7 he is a Star One Technician in Star One and in Fawlty Towers he's a Hotel Guest in The Wedding Party.

Monique Bryant was a Control room Operator in the Ice Warriors, a Technician in Seeds of Death, a Colonist in Colony in Space and returns as a Drone in the Happiness Patrol. In Blake's 7 she is a Mutoid in Project Avalon and in Moonbase 3 she's a Technician in Achilles Heel, Castor and Pollux & View of a Dead Planet.

Karen Burch Daleks’ Girl Technicians in Day of the Daleks and one of the Sisterhood of Karn in Brain of Morbius. She appears in Blake's 7 as a Pyroan in Volcano.

Mary Rennie was a Kitchen Hag in Time Warrior a villager in Planet of Spiders, a peasant/traveller in Masque of Mandragora, a guide in The Leisure Hive and a citizen in Full Circle. She returns as a citizen in Planet of Fire.

Pamela Dale had been a member of the SRS audience in Robot.

Nancy Adams was also a member of the SRS audience and plays a Rezzie in Paradise Towers. In Quatermass and the Pit she's a Woman in Crowd in The Enchanted and a Sightseer in Hob, she appeared in An Age of Kings Part Six: Uneasy Lies the Head and was in the Some Mothers Do 'Ave 'Em episode Frank Goes Over the Edge as an Extra in the Library.

John Beardmore had been a Thal General in Genesis of the Daleks and returns as Captain Revere in Frontios. In Monty Python's Flying Circus he was The Very Late Rev. Prebendary Ross in E. Henry Thripshaw's Disease and he was a Slave in the I, Claudius episode Reign of Terror.

This story is a last Doctor Who appearance for Derek Suthern was a Path Lab Technician in The Hand of Fear, a Mentiad in The Pirate Planet, a Gracht Guard in The Androids of Tara, a Mute in The Armageddon Factor, a Guard in The Creature from the Pit, a Mandrel in Nightmare of Eden and a Guard in The Horns of Nimon. He was only stopped from appearing in FIVE consecutive stories by his role as a Krarg in Shada not being broadcast: he's the Krarg that was recorded rampaging round the decaying Think Tank in episodes 4 & 5. He then played an Argolin Guides in The Leisure Hive, the ill fated PC Davis in Logopolis, a Cricketer in Black Orchid and a Policeman in Time Flight. In Blake's 7 he plays a Federation Trooper in The Way Back, a Scavenger in Deliverance, a Federation Trooper in both Trial & Countdown, a Customer / Gambler in Gambit, a Hommik Warrior in Power and a Space Princess Guard / Passenger in Gold. He too was in The Spy Who Loved Me as an Atlantis Guard. He's a Hotel Guest in the Fawlty Towers episodes The Germans and The Psychiatrist and appears as an Atlantis Guard in the Roger Moore James Bond film The Spy Who Loved Me.

Douglas Auchterlonie was one of the Complex Personnel in Hand of Fear and one of the Pangol Army in The Leisure Hive. Given his slightly unusual surname is the Delphine without a surname, mentioned in the Production File for this story as being in the crowd, the similarly named Delphine Auchterlonie who was a Court lady in Androids of Tara.

Victor Reynolds
had been a Time Lord in Invasion of Time and a Grecian Man in Four to Doomsday.

Geoffrey Whitestone was a Tourist in the Louvre in City of Death, one of the Pangol Army in The Leisure Hive and a Tigellan in Meglos. He returns as the Court Clerk in Trial of a Timelord: Mysterious Planet. In Blake's 7 he was a Star One Technician in Star One. Whereas some of the crowd take a break for episodes 2 or 3, he's the only one of the crowd not to return after episode 2.

Steve Whyment had been a Citizen in Keeper of Traken, a Security Guard in Logopolis, a Kinda in Kinda and Trooper Brooks in Earthshock, a trio of Peter Grimwade productions. In Blake's 7 he was in Stardrive as a Space Rat, Warlord as a Federation Trooper and Blake as a Plantation Bounty Hunter.

Sally Gardener was a Castrovalvan woman in Castrovalva.

Tina Winter was down to appear in Castrovalva as a Castrovalvan Woman but was replaced for the recording. In Fawlty Towers she's a Hotel Guest in The Kipper and the Corpse.

I can't spot anything else I've seen Valerio Martinez, Angela Delaney, Kenneth Goodfellow, April Love, Linda Carroll or Gaenor Rees (who is possibly one or both of the Gaynor Morgan Rees' on IMDB who were active at around that time?) in.

Four actors are specifically noted as being in the cave crowd and you get a decent looks at them with the Hawker as The Doctor, Tegan and Nyssa enter the cave.

Peter Roy was a Greek Soldier in The Myth Makers, an English Soldier in The Highlanders, an Airport Police Sergeant & Chauffeur in The Faceless Ones, a UNIT & Bunker Man in The Invasion, a Security Guard in The Seeds of Death, a Passenger/Plague Victim/Passersby/Ambulance Man/Policeman in Doctor Who and the Silurians, a Policeman in Mind of Evil, Technic Obarl in Hand of Fear, a Guard in The Face of Evil, a Guard in The Sun Makers, a Gallifreyan Guard in The Invasion of Time, a Gracht Guard & one of Zadek's Guards in The Androids of Tara a Guard in The Armageddon Factor, a Skonnan Guard in Horns of the Nimon, a Policeman in Logopolis, and an Ambulance Man in Castrovalva. He returns as a Van Driver in Resurrection of the Daleks. Like many extras at this time he has Blake's 7 form too appearing as a Citizen / Prisoner in The Way Back & Space Fall, an Alta Guard in Redemption, an Albian Rebel in Countdown and a Federation Trooper / Rebel in Rumours of Death. He was in Doomwatch as a man in Project Sahara and Flood. In the The Hitchhiker's Guide to the Galaxy he plays the Limousine Chauffeur in episode 2. He's got a notable role in the James Bond film Thunderball where he played British Secret Agent 006. He has a less obvious appearance in Return of the Jedi as Major Olander Brit but that hasn't stopped the character from getting a Wookipedia page!

There's a Patricia Roy - possibly this one on IMDB? - playing the lone woman in the Cave Croud as well: is that Peter's wife/sister?

Terry Sartain had previously appeared as an Alien Technician & American Soldier in the War Games, a Warrior in The Mutants, a Draconian in Frontier in Space, a UNIT Soldier in The Three Doctors, an Exxilon in Death to the Daleks, a SRS Bouncer in Robot, an Android UNIT Soldier in Android Invasion, a Brethren Member in Masque of Mandragora, a Timelord in Deadly Assassin a Customers in Modern Art Gallery in City of Death, and a Gundam in Warrior's Gate. He was in Doomwatch as Minister's P.P.S. / Man in Club / Man at Palazzo in The Killer Dolphins and in Blake's 7 as a Crewman in Spacefall and a Hooded Figure in Cygnus Alpha.

Lionel Sansby was a UNIT Soldier in the Silurians, one of the Complex Personnel in Hand of Fear, a Passenger in Nightmare of Eden, would have been a Krarg in Shada, plays a Cricketer in Black Orchid and a Passenger in Time Flight. His last Doctor Who role is later this season as a Lazar in Terminus. In Blake's 7 he was a Federation Trooper in Seek-Locate-Destroy and in Doomwatch he was a Man in No Room for Error.

This story was filmed straight after Time Flight and before Arc of Infinity ensuring, yet again, that this season had it's episodes shown out of production order. The last year that the episodes were shown in the order they were made was season 16, the Key to Time stories.