At Handcross Park, Martha witnesses the Toclafane attack on London. (TV: The Sound of Drums)
Handcross Park was the location where Martha Jones used Jack Harkness' vortex manipulator to teleport from the aircraft carrier Valiant, shortly after 8:02 AM on Day Zero of the Year That Never Was. Upon her arrival, she witnessed the ongoing Toclafane invasion of London. (TV: The Sound of Drums, PROSE: The Story of Martha)