Freema Agyeman
From Tardis Wiki, the free Doctor Who reference
Freema Agyeman is the actor currently playing the role of Martha Jones, the companion to the Tenth Doctor, played by David Tennant, introduced in Smith and Jones.
Freema Agyeman had previously appeared briefly in Army of Ghosts as Adeola Oshodi, a Torchwood Institute employee, who was the cousin of Martha. (DW:Smith and Jones)
