@msolga,
There is a difference between the Brooks/Cameron relationship and the Brooks/Blair relationship.
Charlie Brooks and Cameron are old Etonians, they would be chums regardless, they both live within a few miles of each other, go riding, have drinks together.
Blair courted Murdoch soon after becoming party leader, there was a feeling that the Tories would never be beaten without getting Murdoch on board. The headline after the 1992 election was 'It was the sun wot won it,' and there was a certain amount of truth in that.
At the end of the day this is far more damaging to Cameron than Blair, who is yesterday's man.