Aha! Some good news for a change. Not much, but it's good. This is the Elephant and Castle by-pass heading towards the Elephant along New Kent Road. They've just repainted the markings - perhaps in preparation for the Cycle Superhighway that will be coming this way? - and as you can see the new 'give way' lines give the cyclist through-priority over the various entrances cutting across it.
Now, I know this is only a few hundred yards, and it only makes a significant difference over a distance of say a mile or two. And that in the Netherlands you get cyclist-priority cycle paths stretching all the way from one side of the country to the other, which is probably even further. And our Elephant by-pass is only crossing minor entrances, not full-on side roads.
But it's a start. And to judge by the amount of white paint at their disposal, resources are plentiful.
I'm still not entirely sure about this phone box further up, though.