Re: 50th Anniversary Trailer Description
And people really do seem to forget about all the Ninth Doctor pictures, images and what not, and all of whom clearly showcase him alone, without a companion in sight.
Rose could have been just out of shot, separated from him at the time, left in the TARDIS, or on the crapper when the pictures where taken. It's also possible she originally was in some of the pictures but they've been cropped to focus on the Doctor.
"I calculated the odds of this succeeding versus the odds I was doing something incredibly stupid, and I went ahead anyway." - Crow T. Robot, Mystery Science Theater 3000: The Movie