 Location shooting for scenes set at the Police Station Garage took place at the Coal Exchange and Mount Stuart Square , Cardiff Bay on 21 November 2006 . Fields House , located in Newport , filled in for Wester Drumlins . The house was already abandoned and falling into disrepair when the filming crews arrived . Moffat noted that " very little of it was tarted up " for the shoot ; Moffat later called the location " the creepiest house " he had ever seen . The name was taken from a previous residence that Moffat lived in during the late 1990s . Larry describes the residence as " Scooby @-@ Doo 's house " , a reference to the dilapidated mansions that the Scooby @-@ Doo gang would usually visit . The BBC Fact File for the episode notes that 1969 — the year Martha , the Doctor and Billy are sent to — is the first year Scooby @-@ Doo , Where Are You ! aired . 
