I found all this information from
http://www.geocities.com/rickstvshows/ufo.html
It says that Ed Bishop's hair was a wig, but Ray is correct that his hair is really white, so who knows.
UFO Cast Members:
Ed Bishop ................. Colonel Ed Straker
George Sewell ............. Colonel Alec Freeman
Peter Gordeno ............. Captain Peter Carlin
Grant Taylor .............. General James Henderson
Michael Billington ........ Colonel Paul Foster
Gabrielle Drake ........... Lieutenant Gay Ellis
UFO Premise:
Aliens are visiting the Earth and kidnapping humans. An organization called SHADO is formed to defend us from them. SHADO has several lines of defense. Missiles can be launched from a base on the Moon. High altitude aircraft can attack after being launched from submarines. There are also a fleet of armored vehicles spread out all over the planet. The episodes typically involve attempted alien attacks and how Earth defenses stop them.
UFO Trivia:
SHADO is an acronym for "Supreme Headquarters Alien Defence Organization". It is a control center hidden underground beneath a movie studio somewhere near London, England.
Earth had a satellite in orbit to detect the UFOs. It was called SID, another acronym for, "Space Intruder Detector".
The UFOs on the tv show could travel many times the speed of light, but would overheat and blow up if they spent more than a few days in Earth's atmosphere.
The women on the Moonbase all wore purple wigs. Sylvia Anderson, who along with her husband Gerry created the show, thought that in the future wigs might become part of a uniform. It sounds perculiar today, at that time wigs were very popular, and on the show Ed Bishop, George Sewell and Michael Billington also all wore wigs.
Colonel Straker's car had a few features that seemed science fiction in 1970 but are both available today. It had a car phone and an intruder alarm that automatically notified Headquarters in case he needed assistance of any kind.
Continuity error: In episode 6 "E.S.P." it is stated that the aliens' planet is dying and they meant us no harm, but in episode 9 "Destruction", the aliens tried to wipe out all life on Earth.
Episode Guide
- The First Season
1... Identified (9/16/1970)
2... Exposed (9/23/1970)
3... The Cat With Ten Lives (9/30/1970)
4... Conflict (10/7/1970)
5... A Question Of Priorities (10/14/1970)
6... E.S.P. (10/21/1970)
7... Kill Straker! (11/4/1970)
8... Sub-Smash (11/11/1970)
9... Destruction (12/2/1970)
10. The Square Triangle (12/9/1970)
11. Close Up (12/16/1970)
12. The Psychobombs (12/30/1970)
13. Survival (1/6/1971)
14. Mindbender (1/13/1971)
15. Flight Path (1/20/1971)
16. The Man Who Came Back (2/3/1971)
17. The Dalotek Affair (2/10/1971)
18. Timelash (2/17/1971)
19. Ordeal (4/14/1971)
20. Court Martial (5/1/1971)
21. The Computer Affair (5/15/1971)
22. Confetti Check A-O.K. (6/10/1971)
23. The Sound Of Silence (6/17/1971)
24. Reflections In The Water (6/24/1971)
- The Second Season (2 episodes only)
25. The Responsibility Seat (5/8/1973)
26. The Long Sleep (5/15/1973)