Big Brother (British TV series) series 15

The series was controversially won by Helen Wood who won the £100,000 prize fund beating bookies' favourite Ashleigh Coyle by a margin of 4,631 votes. Wood became the first woman to win the competition since the show's inception on Channel 5. It was then revealed that just 1.2% of the vote, separated Helen and Ashleigh, making it one of the closest results in ''Big Brother'' history. This was the first, and currently only, series of ''Big Brother UK'' where both the runner-up and the winner were women.
Wood would later return the following year in ''Big Brother 16'' as part of a secret twist that saw her and two other "legendary" former Housemates, Brian Belo and Nikki Grahame, re-enter the House as part of "Time Warp" week. In addition, Mark Byron and Matthew Davies also made an appearance in a shopping task. Provided by Wikipedia