All Region 1 releases prior to September 2005 included a "Who's Who" feature that identified key cast members and gave brief biographies and filmographies.
The Region 1 releases of The Robots of Death, The Ark in Space, The Talons of Weng-Chiang, and Pyramids of Mars also include a featurette with the syndicated Time Life introductions and closings narrated by Howard da Silva.
Other features present on every (or nearly every) DVD include cast and crew commentary, subtitles, production notes, and a photo gallery.
"Special edition" releases (which make up the bulk of the line; see above) also typically include one or more documentaries relating to the serial in question, any relevant archive material, and—where applicable—the occasional highlight such as a Dolby 5.1 mix or enhanced movie edit.
Most, but not all, Doctor Who mini-episodes, prequels and webcasts are bundled as part of the DVD and Blu-ray releases.
All subsequent episodes (excluding the animated Dreamland) have also been filmed and broadcast in high-definition and released on Blu-ray, usually simultaneously with the corresponding DVDs.
An upscaled version of "The Next Doctor" (which was shot in standard definition) was also released on Blu-ray as part of a box set containing all of the 2008–2010 specials.
In 2011, the 1975 Doctor Who serial Pyramids of Mars was included on both the DVD and Blu-ray box sets for The Sarah Jane Adventures Season 4.
Spearhead from Space, the only serial of the classic series shot completely on film, was released on Blu-ray on 15 July 2013 with exclusive bonus features.
Despite being shot entirely on film, the Blu-ray release is simply an HD upscale of the 480i broadcast copy.
Series 1-4 was shot on Standard Definition video but upscaled and remastered to full 1080p for this release.
[4] The classic-era began to receive complete season Blu-ray releases from 2018 onward, under the banner "The Collection".
All Ninth and Tenth Doctor episodes appearing on Blu-ray produced prior to "Planet of the Dead" have been upscaled to 1080p for those releases.
"Twice Upon a Time" (2017), Peter Capaldi's final episode, was released on 4K Ultra HD Blu-ray in 2018.
The Ribos OperationThe Pirate PlanetThe Stones of BloodThe Androids of TaraThe Power of KrollThe Armageddon Factor Starring Peter Davison as the Fifth Doctor.
[845] Some have re-edited feature-length versions on a bonus disc, while others have a reduced edit with additional footage and new special effects, as well as a remixed 5.1 surround soundtrack.
The alternative versions of Enlightenment and Planet of Fire are presented in 16:9 widescreen rather than the original 4:3 aspect ratio.
The Curse of Fenric and Battlefield are extended edits with new scenes added, while Enlightenment and Planet of Fire are cut down in length to make them more like modern Doctor Who stories.