Actually, I should've asked... Classic or New Who?
Classic is getting the MOD treatment I mentioned above. New Who? Those are all still traditionally pressed.
I wouldn't be so quick to call Bootleg in this case.
BBC Archives has been steadily rereleasing OOP Doctor Who DVDs as MOD titles. There's a chunk of them at least once or twice a month in TSOD's news roundup.
Odds are, that's what OP got. However, it is Doctor Who, so bootlegs are always...