Crossrail: A rare look deep under London

25 January 2013 Last updated at 09:33 ET Help

The £15bn Crossrail project - linking Shenfield in Essex to Maidenhead in Berkshire via London - is the largest engineering project in Europe.

So far, two of the 26 miles of tunnel have been bored and BBC London's transport correspondent Tom Edwards is the first to be allowed to film deep under west London.

BBC © 2013 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.