From the early 1970s, when more than one episode was often recorded at a time, more flexible editing meant that under- and over-running instalments could be balanced out, sometimes by shifting cliffhangers away from their originally intended position. Here are some examples of episode endings that were moved…
► Death to the Daleks
Part Three: “Get back!” Bellal warns the Doctor as he sees an advancing threat. Two Daleks sweep around the corner towards the city’s patterned wall and open fire with their machine guns.
► Genesis of the Daleks Part Five: Holding two wires, the connection of which could wipe out the Daleks and complete his mission, the anguished Doctor ponders: “Do I have the right?”