Race Against Time was a documentary that appeared on the 2|entertainDVD of The Mutants. It featured Noel Clarke and explored the casting decisions of Doctor Who production teams through the ages. It discussed whether there was evidence of racism in the programme's past. It also briefly explored whether BBC WalesDoctor Who had attempted to address the issue.
For the purposes of this list, a "DVD documentary" is one made especially for the Classic Series DVD range. For this reason, things like studio recordings, film trims/inserts and other documentaries featured on DVD releases are not included below.