Tenth Drax

The Tenth Drax was one of Inspector McCormick's "half a dozen best men". The second female incarnation of Drax, she had undergone a heart bypass operation three regenerations before to prevent anyone picking up her the beats of her hearts.

As such, she was present when McCormick was called to arrest the third, fifth, ninth and twelfth incarnations of Drax. They later all ran away in McCormick's TARDIS. (AUDIO: The Trouble with Drax)