This Radio Telescope substation is named "Tycho", after Tycho Brahe, who ironically was the last famous astronomer who formed his theories by using the naked eye, not by use of a telescope.
The footage of the Sontaran mothership exploding is re-used from The Poison Sky (2008), marking the first time footage from Doctor Who has been used in The Sarah Jane Adventures.
Sontaran Commander Kaagh is the only survivor of the Tenth Sontaran Battle Fleet which was otherwise seen to be destroyed in The Poison Sky (2008).
Sarah Jane refers to her past encounters with Sontarans, alongside the Third Doctor in Earth's relative past in The Time Warrior: Part One (1973), and alongside the Fourth Doctor in Earth's relative future in The Sontaran Experiment: Part One (1975).