The sloping road one is taken from liverpool street - the road where
the bus stops are now is on the left, and mcdonalds is on the extreme
right - there is a similar picture from about 1920 that shows a
slightly wider area -
http://www.tfsimon.com/england-liver...tation.bmp.jpg.

There is one from 1985 that just shows it -
http://gallery120232.fotopic.net/p13277472.html
And here is one that just shows the very top of the slope -
http://gallery120232.fotopic.net/p13296306.html

The slope should be where mr feather put the offices.