samhogarth
Fox J. McCloud
Kay, ten Doctor's out of the Time Lord process of regeneration. He's 900 years old (according to him), he has a big blue 1950's Police Public Call Box which is actually a TARDIS (Time And Relative Dimension In Space) with a malfunctioning chameleon circuit. He has a sonic screwdriver. I can practically tell you most things about the Doctor. Honest.
Then you would know he's gotta be at least 1300.
The Doctor's actual age has always been slightly in question.
Doctor #1 - claimed to be "centuries old", but was never specific. It wasn't until later that we learned he was actually a young Time Lord in an old body, which had lived past its usefullness. That's why he collapsed and went into an automatic regeneration. It has been speculated that he feared regeneration because it was an unknown factor to him, so he put it off until it was no longer possible. But he was probably around 300 years old, based on Doctors #2 and #3.
Doctor #2 - He carried a 500 year diary full of notes, but does not seem to have spent a long time in this incarnation; certainly not more than the time in which we follow his adventures. Brought back to Gallifrey, accused of breaking the Prime Directive (to use Star trek jargon), which is a serious offense among Time Lords, he is sentenced to death. However, the CIA - Celestial Intervention Agency (which it later turns out the Doctor is a secret agent for), manages to argue a lighter sentence for him, and he is forced to regenerate into a different incarnation, and sentenced to indefinite exile on Earth. During this period, he continues working for the para-military group known as U.N.I.T. with his friend the Brigadier, who was one of the most well-loved and enduring of the Doctor's many companions.
Doctor #3 - Living in exile, he nevertheless is still under the control of the CIA and still has to go on missions for them. The Doctor makes a claim at this time to be somewhere around 350 - 400 years old. The first companion he "falls for" is a little nearsighted blond in a mini-skirt, named Jo Grant. However, Jo leaves him for a hippie scientist. Hurt and angry, he disappears for an unspecified length of years, and comes back to continue his work for U.N.I.T., and that's when he meets Sarah Jane Smith. Sarah's deep feelings for the Doctor are never spelled out, but they are obvious all the same.
Doctor #4 - claimed to be 750 years old, which seems to be truthful enough considering the time he spent away from Earth after losing Jo. He eventually leaves Sarah behind because he couldn't take her to Gallifrey, and sensed danger for her as well. After leaving gallifrey, he travels alone for an unknown time, takes up with a Leela, new companion for whom he has little affection, although he does respect her skills. He eventually leaves her on Gallifrey and travels again for a long period of time, again unspecified. Then he travels with a young female time lord, Romana, who starts out as a stuffy, arrogant twit, but who grows and matures until she takes off on her own. During this time, there has been a feeling of a span of time spread out, and the Doctor has aged considerably in this body. He falls in a struggle that at an earlier time he would have not have lost, and is foced to regenerate. He is probably 900 years old, though to the bitter end he claimed to be 750.
Doctor #5 - Had a nearly fatal regeneration which left him weaker than normal, and he never quite recovered from it in this incarnation. His companions often seemed more in charge than he was. For some curious reason, he claimed to still be 750 years old. He almost died in a heroic act, at the end his short 5th life, and regenerated into...
Doctor #6 - Who was as aggressive as his former self had been weak. He had recovered from the sickly incarnation with a vengeance. This time he boasted being 900 years old, though as usual it was difficult to know how truthful he was. The Doctor has long been vain about his age. He did not live long in this body, either.
Doctor #7 - Although in the original series, there was no break in the time sequence to show great passages in time, the series disappeared from TV in 1989, the Doctor returned in 1996 after seven TV years, and the usual unspecified length of time in the series itself. He regenerates early in the story. I do not know if he ever mentioned his age.
Doctor #8 - We only saw him in one story, after which he went his way in the galaxy, alone. We never see him again.
Doctor #9 & #10 - He come back to us in 2005, after 11 TV years of absence. He is angry and bitter such as we have never seen him before, and many have speculated that he regenerated during the terrible "time war" that wiped out the Time Lords. These two incanrations are the current ones, and they both claim to be around 900 years old, but as always, the Doctor's age is suspect and self-contradicting. Whenever he gives a specific number, it doesn't match the storyline itself very well, and one almost feels that even he has lost track of time.