From the
Radio Times:
5.50 ColourDr Who
The first part of a new adventure starring
Jon PertweeThe MutantsA six-part story
by BOB BAKER and DAVE MARTIN
Part 1
A mysterious summons from the Time Lords takes Jo and the Doctor straight into danger.
MarshalPAUL WHITSUM-JONES
StubbsCHRISTOPHER COLL
CottonRICK JAMES
Dr WhoJON PERTWEE
Jo GrantKATY MANNING
VaranJAMES MELLOR
Varan's sonJONATHAN SHERWOOD
KyGARRICK HAGON
AdministratorGEOFFREY PALMER
Title music by RON GRAINER
and the BBC RADIOPHONIC WORKSHOP
Incidental music by TRISTRAM CARY
Script editor TERRANCE DICKS
Designer JEREMY BEAR
Producer BARRY LETTS
Director CHRISTOPHER BARRY