Lambeth Council are working on their scheme to provide secure on-street residential cycle parking. A trial installation of a 'Fietshangar' in Bonnington Square, Vauxhall moves steadily nearer, with a planning application to be made within a few weeks.
The Fietshangar will hold 5 bikes, take up half a parking space with the other half being where you stand to put your bike in/take it out.
If it was just a one-off not a pilot, it could prove tempting to make life easy by buying an old Luton van with an MOT and tax, buying a residents' parking permit and using the van to keep bikes in. The Fietshangar is worth the effort though, not least because it looks much better - apparently it'll be deep green!