In message om, Rupert
Candy writes

...though the side-contact third rail system might not go down too well
in Piccadilly Gardens...

(Actually, I believe the original DLR stock which was sold on to Essen
has had pantographs installed without too much trouble, so I'm just
being facetious.)

It has indeed, and been fitted with 'proper' driving cabs and was
spotted a few months ago being driven down real streets on the U17.

http://www.g7kkh.co.uk/Stuff/DSCN1372.JPG

shows such a beast.
--
Steve Fitzgerald has now left the building.
You will find him in London's Docklands, E16, UK
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