Mike Williamson, head of radio at Carat, says today’s RAJAR results represent a superb year overall but some stations need to re-focus after disappointing results…

Mike Williamson, head of radio at Carat, on today’s RAJAR results and why there is huge potential for national brands to take a higher share of ad spend…

Mike Williamson, head of radio at Carat, on the latest RAJAR Q1 2011 results…