This Week in United Kingdom

The Invisible Enemy: Part Four

Last updated 13 January 2025

Broadcast: Thursday 3rd August 1978
7:00pm-7:25pm BST (18:00 GMT) < > « »
(actually broadcast at 19:00:09)
BBC One

Featuring: Tom Baker, Louise Jameson, John Leeson, John Leeson, Frederick Jaeger, Michael Sheard

The Nucleus has escaped the Doctor's body and grown to human size. Its plans to spawn and infect the whole galaxy are nearing fruition. And it looks like K-9 has a new master

Synopsis Source: Doctor Who Guide

Broadcast notes:

The repeat wasn't broadcast by BBC Cymru, which showed Heddiw instead.

Broadcast Source: BBC

Ratings Information:

Consolidated figures: 6.800m viewers (+7 days), 35th place