Advertising accounts for less than 50% of the FT's revenues

"Two thousand of the FT’s new 2011 subs were corporate licenses. In the U.S., print circulation was overtaken by these digital subscribers for the first time.
[...]
Advertising is now the minority of FT revenue, with content sales 58 percent. And digital is now 47 percent of revenue."

Source:  Paid Content, 27th February 2012