The Eleventh Doctor found that Starship UK was using a star whale in place of an engine. (TV: The Beast Below [+]Steven Moffat, Doctor Who series 5 (BBC One, 2010).)
By one account, the Celestial Omnibus had an engine. (PROSE: Iris Wildthyme and the Unholy Ghost [+]Ian Potter, The Panda Book of Horror (2009).)
During the 21st century Dalek invasion, when the Tenth Doctor was at the Shadow Proclamation's headquarters, he noted that all the stolen planets fit together "like pieces of an engine". (TV: The Stolen Earth [+]Russell T Davies, Doctor Who series 4 (BBC One, 2008).)
All Speed Inter-System Type Ks were a type of starship engine used by some Sycorax tribes. (PROSE: The Visual Dictionary [+]Andrew Darling, Kerrie Dougherty, David John and Simon Beecroft, Dorling Kindersley (2007). Page 94; Edition: 2014 reprint., The Coldest War: Marker 47 [+]Colin Brake, Decide Your Destiny (BBC Children's Books, 2010).)