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A line of dialogue had been scripted for this episode which explained that the newly regenerated Doctor had imprinted on Rose's accent, "like a chick hatching from an egg", but the line was deleted from the final episode.
While the new Doctor is picking out his new clothes he briefly considers an item of clothing that looks like it's from the Restoration period (red, blue collar, made of silk). The costume was one of David Tennant's outfits from Casanova (2005), the series he previously worked on with Russell T. Davies.
In the wide shots of the city you can see scaffolding around Big Ben, in the process of being rebuilt after Aliens of London (2005).
David Tennant is credited as "The Doctor", as opposed to Christopher Eccleston who was credited as "Doctor Who". The change in the credit was done at Tennant's request.
For the shots where the Sycorax are first shown, they were intentionally posed to resemble Queen: Bohemian Rhapsody (1975).
The TARDIS wardrobe contains a Hogwarts uniform. This is a nod to David Tennant's appearance as Barty Crouch Jr. in Harry Potter and the Goblet of Fire (2005).