Various scenes of the Judoon in 'Smith and Jones' as they search an Earth hospital for a dangerous criminal.
Some scences might show the Doctor and Martha Jones, but this focoused on the Judoon.
And another thing, the Judoon's Costume design is very similar to the Sontarans in the classic series!
The Sontarans and UNIT are battling each other over Earth!
The Sontarans massacred UNIT, then UNIT uses the Valiant to blow the doors open and UNIT shots the sontarans and wins the battle
Seen in 'The Poison Sky'
The trailer of the upcoming episodes of Doctor Who:
Partners in Crime
The Fires of Pompeii
Planet of the Ood
The Sontaran Stratagem
The Poison Sky
The Doctor's Daughter
The Unicorn and the Wasp
And featuring the return of the Sontarans and the Ood
