On Nancy's personality, Fox described her as different from other "Hollyoaks" girls, dubbing her the "anti-Hollyoaks girl". She said that Nancy has "always got some kind of bitchy comeback for everyone". She explained that Nancy "says that you don’t have to be the skinny blonde or the skinny brunette, you can be the one who does whatever the hell she likes". After the character had gone through certain transformations, the actress spoke about these changes saying: "Nancy's gone full circle and she's had the chance to become a whole character, rather than just one who has no end of tragedy and no end of silly affairs". Fox has said that her character is "a control freak. Nancy has very definite ideas of what she wants and what she doesn't". She added that Nancy is "a bit posh and stiff" and "uptight" but that she can get "really wild" when she has "had a few drinks". Fox has described Nancy as "a bit of a moral compass for the show. She knows what's right and she's often the voice of that. I think that's a really good role for her, and it's quite an important one. I think it's quite good to have a strong, intelligent woman in the show". She added that Nancy "has a very short fuse and loses her temper quickly".