The Doctor's TARDIS contained a boot cupboard.
When the Fourth Doctor gave Sarah Jane Smith a tour of the TARDIS, he showed her the boot cupboard, remarking that it was "not very interesting". Sarah thought that it was enormous. (TV: The Masque of Mandragora)
While looking for Leela aboard the TARDIS, the Fourth Doctor checked the boot cupboard, the sculleries, both swimming pools and the lagoon. He found her in the library, reading. (AUDIO: White Ghosts)
During the Seventh Doctor's time, the boot cupboard contained a sign which read, "Quiet, or tongues will wag". (COMIC: Cat Litter)
When the Eighth Doctor tidied up the boot cupboard, he discovered a brochure for a 2074 conference on 20th century science fiction. (PROSE: Mad Dogs and Englishmen)
While giving Gabby Gonzalez a tour of the TARDIS, the Tenth Doctor showed her the boot cupboard, which was at that time a small shelf located in a TARDIS corridor. (COMIC: Laundro-Room of Doom)