Tom Dekker

 was a human detective on Earth. He helped the Seventh Doctor against Agonal and the resurrected Three Who Rule, shooting the three vampires in the hearts before they could be fully reborn. (PROSE: Blood Harvest) He later met the Doctor's prior incarnation in London when he emigrated over the ocean as head of a branch of the Pinkerton Detective Agency (Naturally unaware of the two Doctors' connections to each other), helping the Doctor and Winston Churchill thwart a conspiracy to place a king with Nazi sympathies on the throne. (PROSE: Players) Dekker was also an attendee at the wedding of Bernice Summerfield and Jason Kane. (PROSE: Happy Endings)