The Mansfield teenager was fourth going into the final length, but powered past her opponents before overhauling US leader Katie Hoff to snatch the gold with Jackson holding on for bronze. Adlington, who was watched by Britain's last women's swimming champ, Anita Lonsbrough, said: "To be the first woman to win an Olympic gold for nearly half a century feels wonderful. And it's incredible to see two British women sharing a medal podium. I don't think either of us expected it. Nobody did."