The date on the newspaper is 23rd November, the same day and month the very first episode of Doctor Who aired, back in 1963.
It is said that Rani and Clyde went through a time fissure but only Rani did in The Temptation of Sarah Jane Smith
Several of the Doctor's past companions, and what they are doing now, are referred to: *Tegan, companion to the Fourth and Fifth Doctors, is fighting for Aboriginal rights in Australia.
*Ben and Polly, companions to the First and Second Doctors, are running an orphanage in India.
*Harry Sullivan, companion to the Fourth Doctor, is mentioned by Sarah Jane to have created vaccines that have saved hundreds of lives (Her tone suggests that he may also have died some time ago).
*A "Dorothy something" is mentioned to be running a company called "A Charitable Earth" (The initials of which spell "Ace", companion to the Seventh Doctor).
*Ian and Barbara, companions to the First Doctor, are married, both professors at Cambridge, and are rumored not to have aged since the sixties.
Flashbacks are shown of the classic Doctor Who stories The Daemons, The Curse of Peladon, The Sea Devils, The Mutants, The Time Monster, The Three Doctors, Carnival of Monsters, Frontier in Space, Planet of the Daleks, The Time Warrior, Invasion of the Dinosaurs, Death to the Daleks, The Monster of Peladon, Robot, Genesis of the Daleks, Terror of the Zygons, Planet of Evil, Pyramids of Mars, The Android Invasion, The Seeds of Doom, The Masque of Mandragora, The Hand of Fear, the Doctor Who (2005) episodes School Reunion and The Stolen Earth, and from this series, Invasion of the Bane, Revenge of the Slitheen, Eye of the Gorgon, Warriors of Kudlak, Whatever Happened to Sarah Jane?, The Lost Boy, The Last Sontaran, Day of the Clown, Secrets of the Stars, The Mark of the Berserker, and The Temptation of Sarah Jane Smith.
Sarah Jane mentions the Doctor taking her to San Martino in 1492. This occured in the Fourth Doctor episode The Masque of Mandragora.
Jo mentions Metebelis 3, the planet the Doctor often talked of visiting during her time with him, and the planet where he was exposed to a lethal dose of radiation, bringing about his regeneration into his fourth incarnation.
Sarah Jane and Jo both mention their trips to the planet Peladon, as seen in the Third Doctor episodes The Curse of Peladon and The Monster of Peladon.
The Brigadier absence from an appearance within an episode is once again explained by the excuse that he is in Peru. This reason was used in Doctor Who episode The Poison Sky and The Sarah Jane Adventures episode The Wedding of Sarah Jane Smith.
Jo mentions that the Doctor once took her to the planet Karfel. The Sixth Doctor visited Karfel in the episode Timelash. During that episode, the natives mentioned what was presumably the same unchronicled adventure that the Doctor and Jo had there.
The Third Doctor's first companion, Liz Shaw, is briefly mentioned. She is unable to attend the funeral due to being on 'the moonbase' until Sunday.
Sarah Jane has Mr. Smith jam a Mars probe before it can gain footage of a pyramid, possibly the same one she and the Fourth Doctor entered in the classic episode Pyramids of Mars. She also mentions an 'ancient and terrible' civilisation from Mars, alluding to the classic Doctor Who enemies, the Ice Warriors.
Mister Dread and the "men in black" previously featured in the animated Doctor Who (2005) special Dreamland. Prisoner of the Judoon, Androvax's previous appearance, was also linked to that story; Androvax used nanoforms to create a replica of the ship from that story.
This is Simon Callow's first appearance in The Sarah Jane Adventures although he has appeared in the Doctor Who episode The Unquiet Dead.
The Blathereen were previously featured in the Doctor Who novel The Monsters Inside, but this episode is their first on-screen appearance.
Jeff Rawle previously played the character Plantagenet in the original Doctor Who episode Frontios.
The International Gallery previously appeared in the Doctor Who Easter special Planet of The Dead.
Donald Sumpter has previously played characters in the original Doctor Who episodes The Wheel in Space and The Sea Devils.
The parting words between The Doctor and Sarah Jane in this episode echoes the farewell between Sarah Jane and the Fourth Doctor in The Hand of Fear, where both The Doctor and Sarah Jane ask the other not to forget them.
Goof: Luke and K9 say "Have a good evening" when it is clear daylight and obviously in the middle of the afternoon
This is not the first time Zenia Merton has starred alongside The Doctor. She once appeared in the original Doctor Who series, in the First Doctor episode Marco Polo.