She's a Beefeater. On Sept. 3, 2007, Moira Cameron, 42, became the first Yeoman Warder. The "Beefeaters," as the group of 35 Yeoman Warders and one Chief Warder are known, have been charged with guarding prisoners and the crown jewels at Britain's Tower of London since 1485. These days, they mainly serve as ceremonial guards and tour guides. Archive: View Recent Photos