John Rowland wrote:
IIRC, the steepest gradient will be 1 in 30, and this will be the steepest
part of the passenger network, all though there are a huge number of other
points which are equally steep. There is a steeper line in Ealing Depot.

The steepest part of the passenger network you say - but which
passenger network, the underground network or the National Rail
network? The East London Line will after all be a National Rail style
franchise operation as opposed to an LUL line.