The Anonymous Widower

After One Tunnel Finishes In London, Another One Starts

Crossrail’s massive tunnel under London is now in the fitting out stage and some of the capitals human moles, are probably now working on the Thames Tideway Scheme to create a super sewer under London.

But according to this article in Global Rail News, others have moved on to Kennington and have started to dig their way to Battersea for the Northern Line Extension.

This though is one of London’s traditional smaller-bore tube tunnels and the tunnellers are stating in a traditional way. This is said.


The article also has this map of the line.

Although TBMs will be used to construct much of the extension, tracked excavators supplied by Schaeff are being used initially to excavate the tunnels around the Kennington loop, where the new line meets the existing railway.

This map from, shows the layout of the lines at Kennington station.

Track Layout At Kennington

Track Layout At Kennington


  • The map can’t show it, but the platforms at Kennington are on two levels.
  • There is also a reversing siding between the two tracks going South.
  • Charing Cross Branch trains use the loop and Bank Branch trains use the siding to reverse.
  • The extension to Battersea is shown in dotted lines.

It was very good of the engineers, who extended the Northern Line in 1926, to future-proof it with a loop, that looks like it makes the extension to Battersea, easier to build!

October 22, 2016 - Posted by | Transport/Travel | , , ,


  1. Future-proofing was only a secondary benefit of the loop, the primary advantage was that it allows trains to be turned around quickly (there was one at Charing Cross Embankment before the extension to Kennington). The Kennington loop will continue to be used for the forseeable future as there are not enough 95TS trains to provide a full level of service on the Battersea branch.

    Comment by David | October 22, 2016 | Reply

    • I agree! If you look at the Wikipedia entry for Charing Cross station, there’s some interesting things about the loop. It was blocked before WW2, as they were worried the Northern Line would flood.

      Some years ago, I went to a lecture at UCL, which talked about how we protected London from flooding during German bombing. We were worried, but luckily the Germans didn’t realise how easily a few well-placed bombs could have flooded the tube.

      There used to be a wonderful repair in Victoria Gardens, where a railway line had been concreted into the river wall to patch up bomb damage. But it appears to have been properly fixed now!

      Comment by AnonW | October 22, 2016 | Reply

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