The capital of England on Earth, shown as a 23rd-century city in Star Trek Into Darkness and recalled elsewhere through Jack the Ripper and Data's Sherlock Holmes programmes.
London is one of the few Earth cities outside North America to be shown at length in Star Trek. Star Trek Into Darkness opens its main story there in 2259, with old landmarks such as St Paul's Cathedral standing among new towers. Thomas Harewood and his wife visit their sick daughter at the Royal Children's Hospital, and Harewood then destroys the Kelvin Memorial Archive on Khan's behalf.
The city's past appears in other stories. In the Original Series episode Wolf in the Fold the murderous entity Redjac turns out to have been Jack the Ripper in the London of 1888.
In The Next Generation, Data and Geordi La Forge play out Sherlock Holmes mysteries in a holodeck recreation of Victorian London in Elementary, Dear Data and Ship in a Bottle.