Oh dear, what have I started? Quite enjoying the debate though. "Isn't the extension privately funded?" There seem to be varying opinions and we will not know for certain for another couple of months. I?ve been following the London transport blog below, and there is a fair amount of speculation that up to 30% - ?200m will be contributed by the developer (based on the contract drawn up with the previous developer), meaning a substantial ?public? investment (and further speculation are that this may be offset against future tax, which in real terms may leave much smaller contribution). http://www.londonreconnections.com/2012/northern-line-extension-public-consultation-details/ I have nothing against Battersea and can see the benefit of investment in public transport in any part of South London without a tube. It would clearly be good if the Northern Line extension carried on to Clapham Junction, but who knows if this will happen in the next 100 years. Lack of a connection at Vauxhall is just mystifying. Too much of a burden on the Victoria Line is the reason given, which ignores future improvements at this station. It is also strange that a tube station is planned 400 yards short of Battersea Park NR. It just looks like bad planning, even for those living in Battersea.