A co-conspirator emails:

I just snapped this bizarre poster on the northbound Victoria line platform at Green Park. No headlines or text, just a big picture in a station almost completely bereft of other adverts.  Any idea what the message is supposed to be? “No time for a novice” perhaps? Or “Wait till you’re 65, like I had to”?

The co-conspirator confirms that Cameron is  blurred on the poster and it is not just an out of focus shot. Anyone know what this is all about?

UPDATE : It is, as some of the comments below immediately identified, an advertising campaign for The Times.