From the Radio Times:

5.40
DR. WHO
An adventure in space and time
starring
WILLIAM HARTNELL
as Dr. Who
and
MAUREEN O'BRIEN, PETER PURVES

The Meddling Monk
by DENNIS SPOONER
with Peter Butterworth
The capture of the Doctor leads Vicki to a surprise discovey.
Fight arranger, DAVID ANDERSON
Title music by RON GRAINER
and the BBC Radiophonic Workshop
Percussion played by CHARLES BOTTERILL
Story editor, Donald Tosh
Designer, Barry Newbery
Producer, VERITY LAMBERT
† Directed by DOUGLASS CAMFIELD

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6.50pm
Doctor Who
The Time Meddler
A four-part classic sci-fi tale from 1965, written by Dennis Spooner. Starring
William Hartnell
Maureen O'Brien
Peter Purves
2: The Meddling Monk.  The Doctor and his compaions have landed in Britain of 1066.  An invasion begins, and events at the monastery get stranger.  With Peter Butterworth.
Producer Verity Lanbert
Director Douglas Camfield
(Black and white.  Rpt)

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