Episodes of this classic '60s British cult sci-fi thriller series were released on DVD in North America by A&E Home Entertainment (under licence from Granada International Media Limited), and in the UK, where the full series has been released twice, with the most recent edition seeing Damon, Bastedo and Gaunt reunite to provide a commentary for several episodes (Damon's continuing role on US series "General Hospital" meant that Bastedo and Gaunt had to be flown to America for this to occur).