As usual here's my hour-by-hour breakdown of how the main London commercial stations are performing - coupled with my regular caveat about not taking a single quarter in isolation.
This quarter's game of 'musical chairs' sees Magic back as London's No. 1 commercial station -with Capital and Heart arguing over who gets Silver or Bronze, depending on whether you are ranking by Reach or Share; although it's really Radio 4 which is London's "No 1 Station".
The one thing that has really caught my eye is that, after a strong performance during the past year, LBC 97.3 has taken a bit of a hit; most noticeably in what used to be its clear domination of late-night, overnight and early-morning. It may, of course, simply be a 'blip'. Only time will tell.
(Click on charts to enlarge)
Survey period - 28th March - 26th June 2011. Source: Rajar/Ipsos Mori/RSMB.
Previous charts for Q1/2011 can be found here and, for a Year-on-Year comparison, Q2/10 is here.
Some other good blogs:
Matt Deegan has written an interesting blog post about RAJAR and how some behavioural changes happen quick and some take a little longer: - http://www.mattdeegan.com/2011/08/04/state-of-radio-q211/
James Cridland writes about the power of the brand in building Rajar numbers - http://james.cridland.net/blog/its-all-in-the-brand/
Adam Bowie has a good overview - http://www.adambowie.com/weblog/archive/003167.html