Originally Posted by Demolished Man:
“It seems that the Doctor was approximately 200 and something when he first took the TARDIS, as established in 'The Doctor's Wife' - she complains that he's never asked her name before, despite being together for seven hundred years (the Doctor at this point claims to be 906-ish).”
Him taking the TARDIS at 235 was established way back in the 4th Doctor Era.
The 700 years given in The Doctors Wife dates back to the point the TARDIS first became a Police Box as she is talking about the Sign on the Door (prior to that there was no Sign for the Doctor to ignore).
The Doctor was about 450 when the TARDIS became a Police Box.
The TARDIS probably has a better grasp of how much time has passed than the Doctor so in reality the Doctor was probably about 1100 - 1150 during the Doctors wife and if 250 years have passed since then (as the Doctor claims) he's now about 1350 - 1400.