128 years after the circle line was completed, the capital now has a new orbital railway.
The final section of the London Overground - between Clapham Junction and Surrey Quays - has been completed and the line now runs in a full circle around the capital.
Today, the Mayor Boris Johnson climbed aboard for the official launch, joined by our Political Correspondent Simon Harris.
More top news
London's mayor Sadiq Khan has warned that a split or failure to unite after the bruising leadership contest could kill off Labour forever.
Former Labour frontbencher Lord Mitchell of Hampstead has launched a scathing attack on Jeremy Corbyn's leadership qualities.
The friends of a Czech businessman who was beaten to death raise £10,000 in a day to send body of 'great man with a big heart' back home