The Doctor noticed him look behind her and followed his gaze. She didn't get it and looked back at him with an even more confused look. "What? What is it? What?" She asked him trying to figure it out. She then finally catched on and looked behind her once again. "Oh." She said slowly before turning back to him with a huge grin. "Oh. Fantastic!" She said happily. She then began running. She was running across the Westminster Bridge.