|Link to 'London Reconnections'|
"The two TBMs currently being prepared are for the boring of the tunnels from Royal Oak Portal. The first of these now sits at Herrenknecht’s German plant, where it is undergoing final factory testing. It will shortly be dismantled and shipped to the UK, where it will be reassembled on the portal ramp at Westbourne Park.
"... Crossrail have confirmed that there have been very general, hypothetical discussions about the possibility of reconditioning and reusing the TBMs, should Crossrail 2 make it definitively off the drawing board."
And if tunnelling floats your boat, here's another in East London:
|Link above to 'Londonist' web site|
and to a BBC video.