Following a request by the United Nations, UNIT is now known as the Unified Intelligence Taskforce, rather than the United Nations Intelligence Taskforce.

General Staal: Remember your status, boy. We do not take orders from humans.
Luke Rattigan: I said "recommend."
General Staal: Then your advice shows military wisdom. She will be terminated.
Luke Rattigan: Cool.

The Doctor: Getting a bit too close to the 1980s.
Donna: What am I gonna do, put a dent in it?
The Doctor: Well, someone did...

General Staal: (observing the UNIT soldiers) Observe their troops. Thin fabrics. Exposed skin. Feeble weapons. These are toy soldiers. The playthings of children.

Martha: That's why I thought we needed an expert.
The Doctor: Really? Who did you get?
(everyone looks at him)
The Doctor: Oh right me, yes.

Private Harris: Someone's growing a body. A human body.
General Staal: Excellent skills of deduction. I would rate you above average, soldier. Well done. (to Private Gray) Whereas you… you smell of sweat and fear.
Private Harris: Yeah? Well, we're not the ones who got out of school early, sonny. Now stop playing Humpty Dumpty and tell us who you are.
General Staal: Is that a reference to my height?
Private Harris: Short answer: yes.
General Staal: A pity. Words are the weapons of womenfolk. I must judge you unfit.
Private Harris: What you gonna do? Bite our ankles?
(Staal shoots Harris in the ankle, crippling him)
Private Gray: I'm warning you!
General Staal: A proper soldier gives no warning. Fire. I order you. Fire! (Gray pulls the trigger but the gun doesn't work) The room is contained within a cordolane signal, exciting the copper surface of the bullet and causing expansion within the barrel, rendering your guns useless and your radio signals have been blocked.
(Staal cripples Gray)
Private Gray: My legs. I can't feel my legs.
General Staal: I apologise for disabling you. Death has more honour, but you are needed for the stratagem.

Martha: Do they know where you are, your family? I mean, that you're travelling with the Doctor?
Donna: Not really. Although, my granddad sort of waved us off, but I didn't have time to explain.
Martha: You just left him behind.
Donna: Yeah.
Martha: I didn't tell my family. Kept it all so secret, and it almost destroyed them.
Donna: In what way?
Martha: They ended up imprisoned, they were tortured. My mum, my dad, my sister. It wasn't the Doctor's fault but you need to be careful. 'Cause you know the Doctor is wonderful, he's brilliant, but he's like fire. Stand too close and people get burnt.

Colonel Mace: According to the records, you travel by TARDIS.
The Doctor: Yeah, but if there is a danger of hostile aliens, I think it's better to keep a super-duper time machine away from the front lines.
Colonel Mace: I see, so you do have weapons but you choose to keep them hidden.

The Doctor: And your name?
General Staal: General Staal, of the tenth Sontaran fleet. Staal the Undefeated!
The Doctor: Oh, that's not a very good nickname. What if you do get defeated, "Staal: The Not-So-Undefeated Anymore But Never Mind"?
Ross Jenkins: It’s like a potato, baked potato, talking baked potato.
The Doctor: Now, Ross, don't be rude, you look like a pink weasel to him.

Luke Rattigan: How… do you tell each other apart?
General Staal: We say the same of humans.

Commander Skorr: Tell me, boy, how many ATMOS devices have been installed?
Luke Rattigan: They've gone worldwide but only about half.
General Staal: Which means four hundred million cars converted. A fine arsenal.
Commander Skorr: Is it sufficient to trigger the conversion?
Luke Rattigan: More than enough, yeah, and that test signal proves that it works. Fifty-two deaths in the same second, man, that was just so cool!
General Staal: Is the temperature significant?
Luke Rattigan: No… it's just a phrase.

General Staal: There is an enemy of the Sontarans known as the Doctor. A face-changer.
Luke Rattigan: Do you mean he's an alien too?
General Staal: Legend says he led the battle in the Last Great Time War. The finest war in history and we weren't allowed to be part of it. Oh, but this is excellent! The last of the Time Lords will die at the hands of the Sontaran Empire in the ruins of his precious Earth!

The Doctor often encountered UNIT in Doctor Who, and when the Third Doctor was trapped on Earth he worked with UNIT to stop alien invasions and foil insidious alien plots.

The Sontarans were a recurring enemy in Doctor Who, appearing in 4 serials; The Time Warrior, The Sontaran Experiment, The Invasion Of Time and The Two Doctors.

Martha's fiancee, Tom Milligan, was the Doctor who helped Martha in Last Of The Time Lords.