On Thu, 12 Jul 2012 10:22:50 +0100, "tim...."
wrote:


"peter" wrote in message
...
Interesting to watch, yes, but had I known nothing about tube
beforehand I would have learned:-

1. There were no underground railways in London before the City and
South London Tube
2. This line was build using cut and cover methods

You must have watched a different program to me, because the one that I
watched clearly said that CSL was tunnelled (by hand)

Indeed, that segment was all about the Greathead shield.