Following the first episode of the first-ever adventure (An Unearthly Child) on 23 November 1963, Doctor Who became to many viewers the most consistently imaginative, inspiring and good-humoured series on British television. The seven Doctors and their various assistants are fondly remembered, and their relative merits hotly debated by generations of fans.

This special documentary, made by a lifelong fan of the series, brings together Doctors Jon Pertwee, Colin Baker and Sylvester McCoy with assistants Nicola Bryant (Peri), Frazer Hines (Jamie), Elisabeth Sladen (Sarah Jane) and Debbie Watling (Victoria) to recall three decades of time travel, endearingly cheap special effects and monsters such as Cybermen, Sea Devils, Zygons, Yetis, Autons and the most evil aliens of all: Daleks.Classic clips, interviews, behind-the-scenes anecdotes and even Doctor Who"bloopers" feature in this special birthday tribute.