Overground extension complete

London has a new ‘outer circle’ railway from today, as the last stretch of the London Overground opens between Surrey Quays and Clapham Junction.

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London's new orbital railway

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.

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