According to website InTheNews.co.uk, the concert being held on 7 March as part of the Intel/PC World promotion will be "streamed on London's Capital FM."
Personally, I think they may have their information confused with last years gig at the Mean Fiddler in London which was broadcast on Capital Radio (it is no longer called Capital FM) and also available on the Capital website. Lets hope I'm proved wrong and we do get to hear this gig...