From the Radio Times:

6.55
DR. WHO
An adventure in space and time
starring
WILLIAM HARTNELL as Dr. Who
and
MAUREEN O'BRIEN, PETER PURVES
The Watcher
by DENNIS SPOONER
with
Peter Butterworth
The Doctor and Vicki renew an acquaintance but tempers get frayed.
Title music by RON GRAINER
and the BBC Radiophonic Workshop
Story editor, Donald Tosh
Designer, Barry Newbery
Producer, VERITY LAMBERT
† Directed by DOUGLASS CAMFIELD
See page 3

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6.50pm
Resistance Is Useless
A Doctor Who Retrospective
This year BBC2 will be showing seven complete stories from the archives, one for each incarnation of the Doctor.  In this compilation of the Doctor's trials and tribulations over the past 26 years, prepare to enter the world of the Daleks, Cybermen, Yetis, Monoid, and the Master.
Director Archie Lauchlan
followed at 7.20pm by
Doctor Who
The Time Meddler
A four-part tale not screened since its original transmission in 1965, written by Dennis Spooner. Starring
William Hartnell
Maureen O'Brien
Peter Purves
1: The Meddling Monk.  The Tardis beings the Doctor and his companions back from space to England in 1066.  But there's something wrong.  How would a wristwatch turn up in 11th-century Northumbria?
Producer Verity Lambert
Director Douglas Camfield
(Black and white.  Rpt)

This is the first mention of another person from the Doctor's home planet.