Name – Gregson
Species – Human
Planet – Earth
Temperament – officious
Appearances – Seeds of Death

Sir James Gregson was the United Nations' Plenipotentiary and Minister with special responsibility for T-Mat. After some initial suspicion about The Doctor and his companions and refusal to connect the Ice Warriors invasion of the moon with the emergence of deadly seeds on Earth, he eventually co-operated with Doctor in his efforts to stop the Martian plans.