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  1. ITV Report

Tunnelling for the Northern Line Extension to begin in March

Two new 3.2km tunnels will be created as the Northern line is extended to Battersea, via Nine Elms Credit: PA

Sadiq Khan has announced tunnelling to extend London Underground's Northern line will begin in March.

A pair of two-mile long tunnels will be created to bring the Northern Line to Battersea.

The £1.2 billion project is the first major expansion of the Tube since the Jubilee line in the late 1990s.

The tunnel boring machines have been named Helen and Amy by local school children Credit: ITV News

Two new stations will be opened in 2020 - one at the heart of the Battersea Power Station redevelopment and another at Nine Elms, serving developments such as the US Embassy and the revamped New Covent Garden Market, as well as existing communities.

Two 650-tonne tunnel boring machines were unveiled today. When fully constructed below ground, they will each be 100 metres (328ft) long.

The Northern Line Extension is expected to cost £1.2bn Credit: ITV News

It’s great news that we are going to begin tunnelling for the Northern Line Extension. Extending the line to Nine Elms and Battersea is going to be a real boost to south London, with the improved transport link helping to provide thousands of homes and jobs for Londoners. I’m also delighted that local schoolchildren have chosen two such inspirational British women as the names for these tunnelling machines.

– SADIQ KHAN, MAYOR OF LONDON
It is the first major Tube line extension since the Jubilee line in the late 1990s Credit: ITV News