They're still underground, with Shane Legg and at least a dozen other people on board. The company is called "Deep Mind" these days, and it's being developed as a games company. It's one of the most significant AGI projects I know of, merely because Shane and Demis are highly competent and approaching AGI by one of the more tractable paths (e.g. not AIXI or Goedel machines). Shane predicts AGI in a mere ten years—in part, I suspect, because he plans to build it himself.

Acquiring such facts is another thing SI does.