11 July (releases)


 * 1964 - "Hidden Danger" was first broadcast on BBC1.
 * 2005 - Revelation of the Daleks was released on Region 2 DVD.
 * 2007 - Head Start was first published in DWBIT 22.
 * 2011 - DVD box set Doctor Who: Series 6, Part 1 was released on Region 2 DVD.