The Tenth Doctor and Donna Noble both don suits on a rooftop. (TV: Partners in Crime)

A suit was an item of clothing, usually consisting of at least a shirt, jacket and trousers. Alternatively, some women wore skirts in place of trousers, as well as tights to sheath the legs.

The Tenth Doctor used to wear two main suits, a dark brown suit with blue pinstripes, (TV: The Christmas Invasion onwards) and a blue suit with red pinstripes. (TV: Smith and Jones onwards) For certain formal occasions, he would also don a tuxedo. (TV: Rise of the Cybermen, The Lazarus Experiment, Voyage of the Damned)

While investigating Adipose Industries, Donna Noble wore a black skirt suit with tights on Tuesday, followed by a black trouser suit on Wednesday. Penny Carter wore a grey trouser suit. (TV: Partners in Crime)

While on Earth, members of the Council of Dead wore identical pin-stripe suits and bowler hats to cover their horns. (PROSE: Snowfall, Attack of the Snowmen)

Bill B Brooks, an agent of Jason Dungeon, wore a suit with a flashy red and yellow tie when he met the Tenth Doctor. (PROSE: The Pictures of Emptiness)

Besnik Lucca, the most dangerous criminal in Cardiff in the early 21st century, always dressed in a crisp linen shirt and an Armani suit. (PROSE: SkyPoint)

Diana Goddard wore a black skirt suit. (TV: Dalek)

The Abzorbaloff, as the human "Victor Kennedy", wore a black suit. In his true form, however, he wore nothing but underpants. (TV: Love & Monsters)

Yvonne Hartman, director of Torchwood One, wore a black skirt suit. (TV: Army of Ghosts/Doomsday)

One BBC newsreader was recurringly seen in a grey suit. (TV: Invasion of the Bane, The Sound of Drums, The Bells of Saint John)

While working as PR agent for Lazarus Laboratories and 10 Downing Street, Tish Jones wore a black skirt suit. (TV: The Lazarus Experiment, The Sound of Drums)

June Turner, wore a dark grey skirt suit. (TV: Regeneration-Hound of the Korven)