In the 2006 Christmas special, " The Runaway Bride ", the Doctor remarks that for a spaceship, the TARDIS does remarkably little flying.

" This does not apply when facing certain extremely advanced weaponry, often created after the Doctor's Type 40 TARDIS, such as Dalek missiles (" The Parting of the Ways "), for which the TARDIS requires additional shielding.

The Eleventh Doctor also does this at the end of " The Eleventh Hour ", when revealing the newly regenerated TARDIS interior to Amy Pond ; he then does it again in " Day of the Moon ".

" Utopia " presented, for the first time on-screen, a circumstance in which a character travels on the exterior of the TARDIS during a flight, when Jack Harkness was somehow able to grab hold of the TARDIS as it began to dematerialise and hold on to its destination ; the episode does establish, however, that a normal person would not have survived the trip, as Harkness is " killed " by the experience, but due to his immortality, soon revives.

Although not strictly a novelisation of the film, there are some similarities in that the book has Ian joining the TARDIS crew for the first time as he does here ( even though he actually joined the Doctor in a previous serial in the television version ).

The Tenth Doctor does the same to his TARDIS in the 2009 Christmas Special The End of Time, Part One.

* The Fourth Doctor eventually does visit Brighton with Romana in The Leisure Hive -- though the TARDIS still misses the opening of the Pavilion by some 200 years.

* The TARDIS does not appear in any portion of this serial, as the crew travels entirely by transmat beam.

* The new TARDIS console, which debuted in the preceding story Planet of Evil, does not appear again until The Invisible Enemy.

Liz eventually does travel in the TARDIS in the Past Doctor Adventures novel The Wages of Sin by David A. McIntee, which takes place after the Doctor regains his knowledge and freedom.

* The TARDIS was also covered in lava in the opening scenes of the 1968 TV story The Mind Robber, where it didn't cope as well as it does here.

In " The Christmas Invasion ", it is stated that the Doctor is " part of the circuit " of the TARDIS's telepathic translation gift, and so it does not function while he is in a post-regenerative coma ; furthermore, it is extended to various people standing near the TARDIS as well as Rose when he recovers.

* Although the Randomiser is removed from the TARDIS in this story, the Black Guardian does not catch up with the Doctor until he is in his fifth incarnation in Mawdryn Undead.

After tricking the Master into completing the repairs on his TARDIS, the Doctor does just that.

* This was the first purely historical serial ( with no science fiction elements beyond the Doctor and his TARDIS ) since The Highlanders in 1966 – 67 ; unlike previous ones, it does not revolve around a well-known historical event.

By this time TARDISes have evolved to point where they appear human and reproduce sexually ( the Doctor's companion Compassion is the first such TARDIS ).

Like the TARDIS, it has become one of the icons of the programme ; spinoff media such as The Sarah Jane Adventures and Torchwood have replicated its functions in devices such as the sonic lipstick, sonic blaster, sonic pen and sonic modulator.

It is shown to have been created by the TARDIS as part of its automatic regeneration.

The Doctor's TARDIS was for most of the franchise's history said to have been stolen from the Time Lords ' home planet, Gallifrey, where it was old, decommissioned and derelict ( and, in fact, in a museum ).

The dimensions and colour of the TARDIS props used in the series have changed many times, as a result of damage and the needs of the show, and none of the BBC props has been a faithful replica of the original MacKenzie Trench model.

Susan Foreman, the Doctor's granddaughter, claimed to have coined the name TARDIS: " I made up from the initials.

In " The Curse of Peladon ," after the TARDIS falls down the side of a cliff, the Third Doctor remarks that it " may have its faults, but it is indestructible.

In " Frontios " ( 1984 ), the Fifth Doctor believes the TARDIS to have been destroyed in a meteorite bombardment, apparently contradicting the earlier claim of indestructibility.

In " The Eleventh Hour " the TARDIS completely changes after crashing, and the Doctor's comment " What have you got for me this time?

The spin-off media have, on a number of occasions, had the TARDIS wait around for the Doctor for decades and even centuries in relative time.

The TARDIS says that she deliberately allowed the Doctor to " steal " her, as she wanted to see the universe itself ; in a reversal of the traditional view, the TARDIS claims to have stolen the Doctor.

Cosmetically, the police box exterior of the TARDIS has remained virtually unchanged, although there have been slight modifications over the years.

In " Boom Town ", the Doctor simply noted that humans do not notice odd things like the TARDIS, echoing a similar sentiment expressed by the Seventh Doctor in Remembrance of the Daleks ( 1988 ), that humans have an " amazing capacity for self-deception ".

Newer TARDIS models apparently have more advanced locking mechanisms that are touch-sensitive or may be operated by remote control.

The TARDIS keys have varied in design from an ordinary Yale key to an ankh-like key embossed with an alien pattern ( identified in Terrance Dicks and Malcolm Hulke's 1972 book The Making of Doctor Who as the constellation of Kasterborous, Gallifrey's home system ) from seasons 11 to 13, after which it reverted to the Yale key design.

In " Utopia " ( 2007 ), and in " The Dalek Invasion of Earth " ( 1964 ), the TARDIS was shown to have an internal deadlock ; once thrown, it would prevent entry even for authorised users with authorised keys.

" Several people have managed to just wander into the TARDIS without any problem over the years, including some who became companions ; since the TARDIS uses keys, it could easily have been left unlocked.

The Time Lords are able to divert the TARDIS's flight path (" The Ribos Operation " ( 1978 )), or have the ability to totally override and recall any TARDIS by the order of the Council (" Arc of Infinity " ( 1983 )).

Later in the same episode, the key fob, when again used by the Doctor, shifts the TARDIS " just a second out of sync " ( one second into the future ), rendering it invisible and so hiding it from the Master.

Two versions of the scene set in the TARDIS were recorded, along with an aborted first attempt to start the second version.

Writer David Whitaker omitted the An Unearthly Child adventure from the first spin-off novelization, Doctor Who in an Exciting Adventure with the Daleks ( later retitled Doctor Who and the Daleks and Doctor Who-The Daleks ), with Ian and Barbara's entrance into the TARDIS leading directly into an adaptation of the second televised serial, The Daleks.

The story was originally released on VHS in 1990, and the unaired pilot ( edited with the second take of the TARDIS scene ) was released as part of The Hartnell Years in 1991.

Susan is eventually sent to retrieve anti-radiation drugs from the TARDIS, where she encounters a second species, the Thals, who are at war with the Daleks.

Once they escape back to the TARDIS, their second trip takes them to the planet Skaro, where they encounter the Daleks for the first time.

In his TARDIS, the Sixth Doctor regains his strength and has a vision of his second incarnation being put to death.

In the IDW Publishing comic Doctor Who: The Forgotten by Tony Lee, a manifestation of Adric appears in the TARDIS Matrix, saving the Tenth Doctor's life and, in the process dying a second time.

Leela's image appears on the TARDIS screen in the second untitled " Meanwhile in the TARDIS " clip, an unbroadcast DVD extra on the DVD collection of the Eleventh Doctor's first series.

The Doctor gives Rose some very complicated directions to the TARDIS wardrobe: " First left, second right, third on the left, go straight ahead, under the stairs, past the bins, fifth door on your left.

When the light vanishes, Margaret's human suit is empty except for a Slitheen egg ; the Doctor surmises that the TARDIS ' telepathy sensed that Margaret wanted a second chance at life and gave it to her.

In the second story, The Highlanders, Jamie McCrimmon joined the TARDIS crew, and remained with the Second Doctor for the rest of his travels.

Faced with this threat, the Time Lords were forced to attempt executing the Doctor, but he eventually tracked Omega to Amsterdam where he defeated him and re-encountered Tegan ( who having now lost her job, had no second thoughts about rejoining the TARDIS crew ).

Sarah Jane declines a second chance of travelling in the TARDIS.