Gwyneth Paltrow and her husband, Chris Martin, treated themselves to a dinner date last night in London. The couple were seen separately leaving the Mayfair restaurant La Petite Maison, with Chris hopping behind the wheel of his Mini to take them home afterward. Gwyneth's back in the UK during a break from promoting her new movie, Iron Man 3, which is out this Friday, May 3. Traveling to show off the blockbuster took her to Munich, Paris, LA, and NYC in the past month. While in LA, Gwyneth recorded numerous TV interviews, including one that aired last night on Chelsea Lately. Chelsea recounted a story of Gwyneth doling out relationship advice to a mutual friend. The recommendation wasn't exactly PG, which led Gwyneth to exclaim to Chelsea, "What if my mother sees this show?!"