Ben Jackson

Ben Jackson was a seaman in The Royal Navy who helped the Doctor to defeat the War Machines. He Accidentally entered the Tardis with Polly, he became a companion and he also witnessed the first Doctor's regeneration. He remained on Earth with Polly after the encounter with the Cameleons.

Ben Jackson was in The War Machines: Episode 1 to The Faceless Ones: Episode 6 Excluding The Power of the Daleks: Episode 5 and The Faceless Ones: Episodes 3,4 and 5.