uchronie:

This is a proposed TfL map for 2016.  One can see the completed “Orbital” London Overground service calling at 55 stations in 20 of London’s 32 boroughs. The London Overground service will eventually run 4 modern, “roomy”, air-conditioned trains an hour.  Work is hoped to be completed in time for the Olympics. Many of the lines have ben extended North and below the river.

uchronie:

This is a proposed TfL map for 2016.
One can see the completed “Orbital” London Overground service calling at 55 stations in 20 of London’s 32 boroughs. The London Overground service will eventually run 4 modern, “roomy”, air-conditioned trains an hour.
Work is hoped to be completed in time for the Olympics.
Many of the lines have ben extended North and below the river.