Read this: Ofcom - The Communications Market: Digital Radio Report 2012

Summary: Ofcom was asked in the Action Plan to publish an annual report on the availability and take-up of digital radio services. The Action Plan emphasises that digital radio switchover should begin only when the market is ready and that it should be predominantly consumer-led. An aspirational target date of 2015 was supported by the Action Plan. - stakeholders.ofcom.org.uk