10 Doctor Who Scenes Even More Impressive When You Know The Truth

Katy Manning's original stint as companion Jo Grant stretched from 1971 to 1973, and though she undoubtedly enjoyed her time on the show, it was incredibly difficult to film at times.

Not because of the long hours, the technobabble, or the endless quarries - but because she could barely see where she was going.

Manning suffered from extreme short-sightedness, and since she wasn't allowed to wear the thick glasses which aided her vision, she would often lose track of her surroundings. In fact, while filming her debut story Terror of the Autons, she ran straight into a rock and twisted her ankle.

In Manning's own words, this forced Jon Pertwee to start "leading me around like a mother hen", in order to avoid her injuring herself constantly. The Master himself, Roger Delgado, also helped Manning in a similar way.

So, the next time you're watching the Third Doctor pull Jo around by hand, it's likely that what you're actually seeing is Pertwee taking care of his co-star.

What a gent.