Dr. Peyton Driscoll (Claire Forlani) is a very upper class English woman but at one point she says "I'm going to the pharmacy" yet the word commonly used in the UK is "chemist". Throughout the episodes in which she has featured she has also used apartment instead of flat, pants instead of trousers, and elevator instead of lift. She way simply be good at adjusting her English terms to American.
Dr Peyton Driscoll's (Claire Forlani) return in Point of View (2010) (#6.22) was planned as the start of a love triangle arc to be revealed in Season 7 if Mac Taylor (Gary Sinise) picked her or Aubrey Hunter (Mädchen Amick) as his new potential love interest. However, Melina Kanakaredes's departure and Claire Forlani taking a part on Camelot (2011) resulted in the story arc being scrapped.