Not literally of course. 
Just been watching Terror of the Zygons and I noticed at the end of part 4, Harry declined to go back in the Tardis. Obviously that was his exit from the show.
My question is, did the scriptwriters do a rewrite during Terror of the Zygons that would see Harry leave?
Or was the decision taken much earlier. Anyone know a date. I was led to believe Harry was supposed to be a long-running character, but was written out because both the Doctor and Harry couldn't be seen to be doing action scenes.
Harry was apparently brought in because the producers thought Doctor Number Four was going to be considerably older than Tom Baker.

Just been watching Terror of the Zygons and I noticed at the end of part 4, Harry declined to go back in the Tardis. Obviously that was his exit from the show.
My question is, did the scriptwriters do a rewrite during Terror of the Zygons that would see Harry leave?
Or was the decision taken much earlier. Anyone know a date. I was led to believe Harry was supposed to be a long-running character, but was written out because both the Doctor and Harry couldn't be seen to be doing action scenes.
Harry was apparently brought in because the producers thought Doctor Number Four was going to be considerably older than Tom Baker.
