I was wondering if would be possible to find out the positions of the tunnel boring machines and how far tunnel excavations currently reach for the Northern Line Extension works?

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TfL Ref: 1370-1819

Thank you for your request received by Transport for London (TfL) on 15 August 2018 asking for information about the tunnel boring machines and how far tunnel excavations currently reach for the Northern Line Extension works.

Your request has been considered in accordance with the requirements of the Freedom of Information Act and our information access policy. I can confirm that we hold the information you require.

The main tunnelling drives were completed approximately a year ago. Following this, the tunnel boring machines were returned to their manufacturer, NFM Technologies, in Bagnols-sur-Cèze, France.

The route of the NLE tunnels can be found on our website: http://content.tfl.gov.uk/nle-routewide-ground-movement-contours.pdf

If this is not the information you are looking for, or if you are unable to access it for any reason, please do not hesitate to contact me.

Please see the attached information sheet for details of your right to appeal as well as information on copyright and what to do if you would like to re-use any of the information we have disclosed.

Yours sincerely

Sara Thomas

FOI Case Management Team

General Counsel

Transport for London

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