Briggs's freighter

Briggs' freighter was a spacecraft under the command of Captain Briggs in 2526. Its cargo, unknown to the crew, was an army of Neomorph Cybermen. They awoke and took over the ship, planning to destroy life on Earth by hitting it with the craft which they had reprogrammed. Adric attempted to deactivate the Cyberman computer that was controlling its flight into Earth, but accidentally activated the warp drive, sending the freighter back in time 65 million years. It still hit the Earth, killing Adric and causing the extinction of the dinosaurs. (TV: Earthshock)