Blazer
A blazer was a jacket resembling a suit jacket, but cut more casually.[source needed]
Worn by the Doctor
The Fourth Doctor wore a rust corduroy blazer during his earlier days. (TV: Robot, The Ark in Space, The Sontaran Experiment, Genesis of the Daleks, Revenge of the Cybermen)
The Sixth Doctor wore a brown and crimson tweed blazer when undercover in Bletchley Park during 1944. (AUDIO: Criss-Cross), and when visiting Russia in 1947. (AUDIO: Quicksilver) He also wore a peach blazer on the Memory TARDIS. (TV: Vengeance on Varos)
The Seventh Doctor wore blazers of cream linen, (PROSE: White Darkness) or tan herringbone-tweed. (TV: Doctor Who)
The Tenth Doctor wore pinstripe blazers done on dark brown and light blue, (TV: The Christmas Invasion-The End of Time) or navy and crimson. (TV: Smith and Jones-Dreamland) He also wore a charcoal grey tweed blazer when posing as John Smith. (TV: Human Nature/The Family of Blood)
The Curator, a future version of the Doctor wore a blazer of olive green herringbone-tweed during the form of an older Fourth Doctor. (TV: The Day of the Doctor)
A parallel version of the Doctor wore a wine purple moleskin blazer when he and Bernice Summerfield fought Faction Cybermen on Nazi Germany. (AUDIO: Blood and Steel)
Worn by Companions
Sarah Jane Smith wore a navy velvet blazer similar to the Third Doctor's when she met the Mona Lisa. (TV: Mona Lisa's Revenge)
Amy Pond wore navy blazers with her t-shirts. (TV: Amy's Choice, The Lodger)
During her time as CEO of A Charitable Earth, Ace wore a black and white pinstripe suit. (AUDIO: Quantum of Axos; TV: The Power of the Doctor)
Donna Noble wore a Prussian blue blazer during the 2009 Sontaran invasion of Earth. (TV: The Sontaran Stratagem|The Poison Sky)
Clara Oswald wore a plum purple blazer as part of her undercover suit. (TV: Time Heist)
Peri Brown wore a flaxen blazer with black stripes. (TV: The Mysterious Planet)
Yasmin Khan wore a sage green blazer when she went to Punjab during 1947, (TV: Demons of the Punjab) and a black one when she first meets the Spy Master. (TV: Spyfall)
Ian Chesterton wore a black blazer during a meeting of companions. (TV: The Power of the Doctor)
Jo Jones wore a mahogany velvet blazer when she reunited with Clyde Langer on the Memory TARDIS. (TV: The Three Doctors)
Worn by the Master
The UNIT Master wore black blazers when posing as businessmen. (TV: Terror of the Autons-The Daemons)
The Bald Master wore velvet blazers done on charcoal (AUDIO: Eyes of the Master) or gunmetal. (AUDIO: Dominion)
The Saxon Master wore black blazers when posing as Harold Saxon. (TV: The Sound of Drums/Last of the Time Lords)
The Spy Master wore a charcoal tweed blazer as part of his master plan. (TV: The Power of the Doctor)
Worn by Others
Henry Van Statten wore a black and white blazer. (TV: Dalek)
Tobias Vaughn wore a black blazer during the first Cyberman invasion of Earth. (TV: The Invasion)
Cathica wore a black blazer as part of her suit. (TV: The Long Game)
Mr Copper wore a blazer of olive green tweed. (TV: Voyage of the Damned)
Gerald Peach wore a double-breasted blazer of dark brown tweed up to his death. (TV: The Unicorn and the Wasp)
Diagoras wore a black pinstripe blazer as did Dalek Sec when he fused with him to become a Human Dalek. (TV: Daleks in Manhattan/Evolution of the Daleks)
The Monk wore a blazer of indigo houndstooth tweed. (AUDIO: The Rise of the New Humans)
Janice wore a single-breasted blazer of tan corduroy. (GRAPHIC: Janice)
