Greenwich

 was an area of London where the Greenwich Observatory was located.

The Tenth Doctor found a spaceship trapped under Greenwich Park in 2009. (COMIC: Don't Step on the Grass)

Henrietta Goodheart, known more familiarly as Netty, was an astronomer at the Observatory until 2006. (PROSE: Beautiful Chaos)

Behind the scenes
Sophie Aldred (Ace) was born at Greenwich in 1962.