Greenpeace

Greenpeace was a political organisation on Earth during the 20th century.

Crystal dreamed that the Sixth Doctor changed into a tall man wearing a Greenpeace t-shirt. (PROSE: Face Value)

The Eighth Doctor once dropped off Sam Jones at a Greenpeace rally in Canada. (PROSE: Vampire Science, Placebo Effect)

Cinder found a Greenpeace t-shirt in one of the rooms in the Doctor's TARDIS. (PROSE: Engines of War)