Beefeater Moira Cameron was allegedly subjected to a hate campaign that saw her uniform defaced, notes left in her locker - and a web entry about her sabotaged.
The 44-year-old bachelor girl became the Tower of London's first female yeoman warder "on merit" in 2007 after 522 years of exclusively male guards.
But the high-profile appointment looks to have sparked jealousy among some of her 34 male colleagues. Two have been suspended over bullying accusations after an internal inquiry by the authority that manages the historic Tower.
A third is being probed. One suspect was cautioned by police after Moira's entry in online encyclopedia Wikipedia was tampered with. It has also been alleged that "harassing" notes were left in her locker. The instantly-recognisable uniform she wore, which cost £1,400, was said to have been defaced.