A proposed extension to the Waterloo and City line to Battersea and Putney.
At present the W&C Line is merely a fancy "travelator" for Waterloo commuters to and from the City. The Line could be vastly more useful to Londoners, bringing tube service to Battersea and Wandsworth, including developments at Battersea power station, and interchange on the District, Victoria, Bakerloo, Northern, Jubilee, Central, DLR, Circle and Mainline services. Platforms and stations at Waterloo and Bank would have to be enlarged (they are currently very short).
However there exists the possibility of keeping it as a short-train light rail service with on-street running from Nine Elms through to Putney.
Total cost: to Madrid Metro specs = 504m Euros; to JLE specs = £2.6bn
NOTE: This is approximately half of the proposed new City Line, which would include a southern routing like this and a northern extension.
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