Three of my younger selves. None of which you've met. We had to take care of Cybermen and some Daleks and Weeping Angels. One was in Paris during various times, which the Time Agency wasn't happy with me finding myself. Another was at the Cathedral of Contemplation. Finally, I got caught in a temporal anomaly on Lucidus Silvara.

[What Fourteen isn't telling is that his Tenth self had been on a quest to figure out how to avoid regenerating.]