Caitlin Blackwood, who plays Young Amy Pond, is the cousin of Karen Gillan, who plays Amy as an adult. Karen begged producers to cast her young cousin, even though they had never met until the read through.
One clothing retailer reported that in the month following the airing of this episode in which the Doctor declared that "bow ties are cool," its bow tie sales increased by 94%.
Steven Moffat set the story in a sleepy English village, because he felt that London had been overused.
In the DVD commentary, Steven Moffat said that this was the most difficult script he had ever written until The Day of the Doctor (2013), as he had to introduce a new Doctor, a new companion, convince the audience that it was both a new and an old show, and deliver a fast-paced story.