John Sauven, executive director of Greenpeace UK, said:
The court's refusal to grant bail to Frank Hewetson flies in the face of all logic. Frank, like the other 29 being held, presents no threat to Russia and should be allowed to return home to be with their families.
Greenpeace has offered sureties that will guarantee the return of all of those charged for any future court case. This is looking a lot like punishment before conviction.
Kieron Bryan, from Devon, was also denied bail at an earlier hearing.
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Ann Myatt, who is contesting Jo Cox's former seat, told a hustings: "We've not yet shot anybody so that's wonderful."