Starship Scotland

Scotland had a starship separate from Starship UK in the 33rd century. When Mandy Tanner noted that Amy Pond was Scottish, Amy replied that Scotland must "be here somewhere". Mandy replied Scotland didn't want to be part of Starship UK so instead, they built their own ship with its own engine. Amy approved of this and remarked that "nothing changes". (TV: The Beast Below)

Behind the scenes
The script for The Beast Below does not directly name Scotland's starship, which itself is a reference to the real-world issue of Scottish independence from the United Kingdom. In the Phoenix Court series, specifically Fancy Man, established that Scotland had become independant by the early 21st century. However, the Phoenix Court series is not currently covered due to it not featuring any DWU concepts when the series was first published.