Jamie (Frazer Hines) and Zoe (Wendy Padbury). With a vast array of locations and characters, the plot follows the Doctor and his companions as they battle the Doctor’s people, the Time Lords ...

Script editor Gerry Davis and producer Innes Lloyd had been so impressed by Frazer Hines’ performance as the young piper during the location filming that they invited him to stay with the series.

The Invasion called for Frazer Hines to climb up a rope ladder attached to a hovering helicopter. Hines was aware of the potential problems this could cause and asked for lead weights to be sown ...