On the 14 January 2016, the Centre for London published a new report “Turning south London Orange: reforming suburban rail to support London’s next wave of growth”.
The press release read: “South London’s transport network is over-crowed and congested. By 2025, the population is set to grow by 270,000 and the pressure on rail services will intensify. The solution? Upgrade south London’s rail network into the Overground, by devolving rail services to Transport for London”.
Details can be found at the Centre for London’s website in Turning south London Orange: Reforming Suburban Rail to support London’s next wave of growth, where you can also download the the report.