Talking about acting with Tennant and Catherine Tate (Donna Noble) in her 2008 episode, Kingston said, "We just clicked. I've done guest roles on other shows, but rarely have I felt such a warm bond." About working with Kingston, Catherine Tate said, "I'm a huge "ER" fan. When you hold people in awe, it's almost a disappointment when they come in and they're utterly normal. But Alex isn't disappointing at all. She's such a lovely person." David Tennant said, "Alex is terrific. When she's telling you stories about hanging out with George Clooney, you know she's pretty cool."