Michael Barrington credited as playing...
Sir Colin Thackeray
- Doctor Who: Somehow a Krynoid can channel its powers to other plants. All the vegetation on this planet is about to turn hostile.
- Sir Colin Thackeray: You mean like aggressive rhubarb?
- Doctor Who: Yes, aggressive rhubarb.
- Major Beresford: What? homicidal gooseberries?
- Sir Colin Thackeray: Heh, heh. You are joking, of course, Doctor.
- Doctor Who: No, I'm not joking.
- Sir Colin Thackeray: [on phone, trying to get UNIT support for the Doctor] This is Sir Colin Thackeray. I am aware that the brigadier's in Geneva. I must speak to a senior officer. This is a matter of national security. Yes, national security.
- Amelia Ducat: Invent a code word, they love that. What about "Operation Nuthouse?"