Nicola Attah
From Tardis Wiki, the free Doctor Who reference
Sergeant Nicola "Nicki" Attah was a British Army officer who stood in for Sergeant John Benton for a time. Through Fulcrum, she was used by the Unzal during their planned incursion. The Third Doctor used her memories of her husband and daughter to undo the conditioning. (AUDIO: The Unzal Incursion)
