Balcombe Street Siege
1975 CE.
Shown on the map at 51.523°, -0.162°.
The Balcombe Street siege involved members of the Provisional Irish Republican Army (IRA) and London's Metropolitan Police, and lasted from 6 to 12 December 1975. The siege ended with the surrender of the four IRA members and the release of their two hostages. The events were televised and watched by millions.
Text from the Wikipedia article Balcombe Street siege, licensed CC BY-SA 4.0.