The Doctor and Sarah are desperate to warn UNIT of the alien invasion, but nobody will believe them. The Kraals' release their android duplicates, including one of the Doctor.

Is this the exit from E-Space? What is the purpose of the Blood Ceremony? How does the Doctor improvise the ultimate weapon?

The Doctor Who Experience is at Madame Tussaud's, London.
Theme music on a single (RESL 80), from record shops

Tony Curran is a Scottish actor who played Vincent Van Gogh, in the 2011 episode Vincent and the Doctor.

Curran was born in Glasgow, Scotland. He is an alumnus of Holyrood Secondary School and is a graduate of the Royal Scottish Academy of Music and Drama.

Curran rose to fame in the BBC television series This Life. Since then, the Scots star has appeared in a number of major film and television roles.

Some of his roles have included Rodney Skinner, (The Invisible Man,) an original character in The League of Extraordinary Gentlemen. To portray the Invisible Man, he donned a special suit that turned him into a walking bluescreen (according to his commentary on the DVD, he looked like a "smurf on acid"). Curran also played vampire roles in Guillermo del Toro's Blade II and Underworld: Evolution .

Curran is active in participating in marathons to raise money for charity. He is a keen fan of Celtic Football Club.

He is a frequent and popular participant in the annual Dressed To Kilt event in New York City, run by the organization Friends of Scotland in celebration of Tartan Week.

In April 2009 Curran revealed to the Daily Record newspaper that he is playing the role of Lieutenant Delcourt, in The Adventures of Tintin: Secret of the Unicorn, which was released in 2011.

Curran most recently voiced the character of Captain MacMillan in the 2011 record-breaking video game, Call of Duty: Modern Warfare 3.

Biography from the Wikipedia article, licensed under CC-BY-SA

Christopher Reynalds  is a British child actor of the 1960s and 1970s, a former member of the National Theatre and a formerCaterham 7 motor racing champion.

Reynalds trained at the Barbara Speak Stage School. He began his acting career in the 1968 film Oliver!. Other film appearances include Goodbye, Mr. Chips (1969) and playing Little Billy in Roald Dahl's film The Night Digger (1971).

He appeared in the 1968 Doctor Who episode The Mind Robber. He played Bardell Jr. in the TV musical Pickwick (1969) with Harry Secombe, and in 1971 he played Alethorpe in an episode of the BBCs Play For Today called Alma Mater.

In the early 1980s Reynalds began to race in Formula Ford 1600s, progressing to the Caterham 7 by the late 1990s, in which he raced in Europe, winning the 2004 Autosport Caterham Eurocup Championship at Brands Hatch.

In 2008 Reynalds returned to Doctor Who as a Sontaran in the episodes The Sontaran Strategem and The Poison Sky (2008). 

Hamish Wilson is a Scottish actor from Glasgow, and is best known for briefly taking over the role of Jamie McCrimmon for part of two episodes in the 1968 Doctor Who serial The Mind Robber when series regular Frazer Hines was ill and unable to attend the recording. The change of actor was written into the script.

Wilson's other work includes numerous TV guest appearances, particularly during the 1960s, and participates in the documentary and the audio commentary on the 2005 DVD release of The Mind Robber.

Other roles include TimeLock, The Wicker Tree, The Elemental, Still Game, Monarch of the Glen, Taggart, The View from Daniel Pike, Adam Smith, Boy Meets Girl, The Borderers, The Revenue Men, Softly Softly, This Man Craig, The Wednesday Play, Greyfriars Bobby: The True Story of a Dog 

Eric Flynn was a Chinese born British actor and singer

Born in Hainan, Flynn married his second wife Caroline, a South African, in 1981. Flynn's daughter from his second marriage, Lillie Flynn, finished a three-year acting degree at The Central School of Speech and Drama in 2007 and his son Johnny Flynn is an actor and singer.

Eric Flynn appeared as Alan-A-Dale in A Challenge for Robin Hood in 1967, as Leo Ryan in the Doctor Who story The Wheel in Space in 1968, as Ivanhoe in a 1970 TV mini series and as Major Tom Graham in series five of Freewheelersin 1971. He was also an established musical theatre actor appearing in shows such as "Evita", "Annie Get Your Gun", "The Sound Of Music", "My Fair Lady", "A Little Night Music" and "Copacabana" starring alongside the likes of Lauren Becall and Maria Freidman.

He died of cancer at his home in Pembrokeshire, Wales on aged 62.

_{Biography from the Wikipedia article, licensed under CC-BY-SA} 

Mary Morris was a British actress.

She appeared  in Doctor Who in 1982 in the story Kinda, playing the shaman Panna opposite Peter Davison.  

She was the daughter of Herbert Stanley Morris, the botanist, and his wife Sylvia Ena de Creft-Harford. She was educated at the Royal Academy of Dramatic Art.

She made her stage debut in Lysistrata at the Gate Theatre, London, in 1935. In 1943, she played Anna Petrovitch in the Ealing war movieUndercover as the wife of a Serbian guerrilla leader. She played Professor Madeleine Dawnay in the science-fiction television drama A for Andromeda (and its sequel, The Andromeda Breakthrough), and the female Number Two in the episode Dance of the Dead of the TV seriesThe Prisoner (1967).

Other television appearances included the Countess Vronsky in Anna Karenina (1977, PBS), the macabre, ancient relative in the Walter De La Mare story Seaton's Aunt (1983, PBS) and the formidable matriarch in Police at the Funeral ( 1989, PBS).

She played Peter Pan on two occasions: once on the stage (as a Gypsy boy) and once as Number Two dressing up as him at a masquerade ball.

She died from heart failure in Aigle, Switzerland.

Biography from the Wikipedia article, licensed under CC-BY-SA 

Australian actor who played the Guardian in the 1971 story Colony in Space and a Rear Admiral in 1972 story The Sea Devils.

Philip Martin wrote the two Sil stories Vengeance on Varos and The Trial of a Time Lord (Mindwarp), which he also novelised for the Target range.

He also wrote the Find Your Fate book Invasion of the Ormazoids and the Target Missing Episodes novel Mission to Magnus, which would later be made into a Big Finish audio story as part of The Lost Stories range. He most recently wrote the screenplay for Sil and The Devil Seeds of Arodor, produced and released by Reeltime Pictures.

Away from Doctor Who he had an extensive career as a TV Screen writer, working on many classic dramas, notably the series Gangsters.

Biography from the Tardis Wiki article, licensed under CC-BY-SA

Tony Sibbald played Huckle in Terror of the Zygons.