Success was never going to be defined by profitability for GB News and TalkTV, at least in the mid-term. So far this has been borne out, with revenues small and viewing confined to niche audiences.

The two recently launched channels have become part of the broadcast news environment while diverging from its traditions. Their emphasis on opinion and commentary over news and analysis has influenced news agendas, political discourse and the TV news landscape more than their viewing figures suggest.

Now that the fairly elastic (and previously untested) boundaries for due impartiality set out in the Broadcasting Code are being stretched, it is only right that Ofcom look at them more closely. Although some change is to be expected, TV news' integrity as a highly trusted medium should be preserved.

The consultation period for the second phase of Ofcom’s Second Public Service Broadcasting Review closes on 4th December 2008. The central issue before Ofcom is that the current PSB model is broken, lacking the flexibility to “adapt to audiences’ evolving needs”. The primary concern lies with the commercial sector, which is under increasing strain to deliver its PSB commitments due to structural changes in the television medium that have been compounded by the present economic crisis. This presentation sets out our views about the role of structural changes in restraining TV net advertising revenues (NAR) growth in recent years along with our latest TV forecasts to 2013. Whilst some of the current downward pressures on TV NAR may be expected to ease, a new structural change that threatens the commercial PSB sector is the growing chasm between BBC investment in its PSB services and the advertising revenues of ITV, Channel 4 and Five