The Ponds' Last Episode on Doctor Who Interview

Executive producer Caroline Skinner on the trio's friendship extending on screen:

"As actors, they're really close and really great friends. As characters, you know who the three of them are, and ending that was always going to be a huge twist, but an exciting one because it's a brilliant story. We realized that when you watch it . . . you see how much that relationship means to the show, and you get a real chance to celebrate it."