LONDON -- Prime Minister David Cameron accidentally left his daughter behind in a country pub after a Sunday lunch with friends following a mix-up over which car she was meant to be going home in, his Downing Street office said on Monday.

Cameron was swiftly reunited with 8-year-old Nancy, one of his three young children, but the incident will add fuel to critics who accuse him of being overly fond of relaxing, or "chillaxing" as he has called it, when not dealing with affairs of state.