[Reposted and updated] If Boris opens a London Overground service at 'Brent Cross Thameslink' (whether or not there are Thameslink platforms), then time to look at an 'ultra-light-rail' Brent Cross Railway

No, it's not Hammerson's Brent Cross:
it's Old Oak Common.
There is a new London Overground
station centre-left, with the Dudding Hill Line
running to Brent Cross top-left.
Another London Overground station is in the centre,
next to Wormwood Scrubs

A cross-section at Old Oak Common, looking east

Link to details of London Overground expansion
in Mayor's plan for Old Oak Common 
or just enlarge image in new window

2013-06 Brent Cross Railway: Parry People Mover (as an example)

Link to Parry People Mover web site
(and Wikipedia)

Link to "Revolutionary tram
notches up 500,000 passengers"

An ultra-light-rail solution at Brent Cross can make use of some (not all) of the material in this earlier document:

2009-11-09 Risks to Light Rail

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Link to:

"The Brent Cross Railway"

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