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.