Tie

A tie was an article of clothing commonly associated with men's apparel on the planet Earth. Ties were worn for their style value, but could also signal levels of formality, association with particular schools, companies or other groups. A tie was favoured by the Doctor in most of his incarnations.

The Doctor's ties
The Doctor regularly wore a tie of some form in most, though not all, of his incarnations.

Second Doctor
The Second Doctor typically wore a small, pre-tied bow tie. He attached it to his shirt with a safety pin. It performed the function of closing the top of his shirt, in place of a collar button. (TV: The Power of the Daleks)

Third Doctor
The Third Doctor occasionally wore ties, favouring jabots to go with his distinctive velvet smoking jackets. (TV: The Three Doctors)

Fourth Doctor
The Fourth Doctor sometimes wore a tie, but also often went tieless or wore a loose cravat under his scarf. (TV: Robot, TV: Pyramids of Mars)

Fifth Doctor
The Fifth Doctor did not generally wear a tie, preferring to wear his shirt open-collared. On one occasion, however, he dressed in early European-style finery and wore a layered cravat in his role as owner of the Tempus Fugit. (PROSE: The Crystal Bucephalus)

Sixth Doctor
The Sixth Doctor wore long bow ties in a loose knot in the style of the First Doctor, but his became wider at the ends with diagonal edges. Rather than being plain, they were either bright blue or red with polka dots (TV: The Mysterious Planet), or yellow with a starfield pattern. (TV: Terror of the Vervoids)

Seventh Doctor
Early in his incarnation the Seventh Doctor wore a four-in-hand tie in a paisley pattern. (TV: Time and the Rani) Later in his incarnation, he wore a solid red four-in-hand tie with a white suit. (PROSE: Original Sin)

While in Perivale in 1883 at Gabriel Chase the Seventh Doctor deflected anticipated criticism from Ernest Matthews by saying, "Let me guess. My theories appall you, my heresies outrage you, I never answer letters, and you don't like my tie!" (TV: Ghost Light)

Eighth Doctor
The Eighth Doctor adopted a silky cravat, starting with the Wild Bill Hickok costume he appropriated shortly after regeneration. (TV: Doctor Who)

In 1930, when he was aboard the R101 airship the Eighth Doctor was denied access to an area of the R101; he protested, "I'm wearing a tie!" (AUDIO: Storm Warning)

At the end of his life, he had switched to a four-in-hand ascot tie. Evidently exhausted by the unrelenting conflict of the Last Great Time War, the manner in which he tied his ascot lacked attention to neatness and appeared hastily bundled on. (TV: The Night of the Doctor)

War Doctor
The War Doctor was not known to sport a tie, choosing more pragmatic attire for the Time War. Instead, he wore a small scarf around his shirt collar, which more or less served the same function of a formal tie and required less upkeep. (PROSE: Engines of War, TV: The Day of the Doctor)

Ninth Doctor
Clive owned a photograph of the Ninth Doctor in 1912 Southampton, in which he was dressed in era-appropriate formal wear including a cravat. (TV: Rose)

Tenth Doctor
The Tenth Doctor usually wore four-in-hand ties of various patterns with his suits, but he also went open-collared sometimes. (TV: The Christmas Invasion) On formal occasions, such as the presentation by Lazarus Laboratories (TV: The Lazarus Experiment) or the party on the Titanic, (TV: Voyage of the Damned) he wore a bow tie.

In 2008, before they had met from her perspective, the Tenth Doctor got Martha Jones' attention in the street and dramatically took off his tie. He did this after they had met and experienced the story's events in his timeline, but before this in hers, as a "cheap trick" to prove he was telling the truth about time travel. (TV: Smith and Jones)

Eleventh Doctor
Following his regeneration and recovery, the Eleventh Doctor proclaimed that "bow ties are cool", and took to wearing them. (TV: The Eleventh Hour) He continued to proclaim this on several occasions despite Amy Pond's insistence that they were not. (TV: Amy's Choice, Vincent and the Doctor, The Lodger, The Big Bang) While on Demon's Run, the Eleventh Doctor again defended this belief on meeting Melody Pond. (TV: A Good Man Goes to War)

The Eleventh Doctor generally wore a red or blue bow tie with his usual outfit. On formal occasions such as Rory and Amy's wedding (TV: The Big Bang) and his own death by poisoning (TV: Let's Kill Hitler), he wore a tailcoat with a white bow tie.

The Eleventh Doctor (actually the Teselecta which was disguised as him) untied his blue bow tie and used it to bind his and River Song's hands together in a as part of their wedding ceremony. (TV: The Wedding of River Song)

He discarded his bow tie shortly before his regeneration, deciding to let go of that attachment to this life. (TV: The Time of the Doctor).

Twelfth Doctor
While posing as a Clockwork Droid not long after his predecessor had regenerated, the Twelfth Doctor wore a suit nicked off one of the robots that included a four-in-hand tie, but upon choosing his regular attire, adopted a tieless look. (TV: Deep Breath) When his memories are been sorted through by the Teller, he says "bowtie, bit embarrassing", (TV: Time Heist) but complimented Osgood's when she copied the look. (TV: Death in Heaven)

Dream Lord
The Dream Lord wore a red bow tie with his outfit. (TV: Amy's Choice)

Other notable ties

 * Ian Chesterton often wore a four-in-hand tie while travelling with the First Doctor.
 * On Vortis, the Doctor used Ian's Coal Hill School tie to test an unknown liquid, finding it to be acid. Ian was momentarily more concerned about the loss of his tie than the fact that his life had just been saved. (TV: The Web Planet)
 * Vislor Turlough continued to wear his Brendon Public School uniform, complete with school tie and wing collar, through most of his travels with the Fifth Doctor. (TV: Mawdryn Undead)
 * On both his visits to the Musée d'Orsay in 2010 the Eleventh Doctor complimented Dr Black on his bow ties. (TV: Vincent and the Doctor)
 * The Silents wore four-in-hand ties along with their suits while on Earth. (TV: The Impossible Astronaut)
 * Ianto Jones was rarely seen out of his trademark suits (two and three piece) and silk neckties. He favoured a full-Windsor knot.