A: The Government.
It's a great (and awful) story from the Sunday Telegraph - the Govt overtook Proctor & Gamble in advertising spend this year, according to Nielson. Remarkable. I was meaning to put this up but didn't get to a computer yesterday. It would seem, from the article, that the BBC's "It's all in the database" scareathon ad campaign isn't included in the figures, which would drive the Government's figure even higher.