[Kasterborous]

This contains a spoiler if you haven’t seen series three don't look, where is the spoiler button?









The Doctor and the Master were both renegades living there lives beyond the Time Lord rules, I believe the Time war was fought at the end of the eight Doctor’s regeneration, hence the ninth Doctor checking his appearance early on in Rose.
As for the Time war itself there is a rumour that after the fourth series the BBC are going to make specials instead of a fifth series.