A trip to London is never complete without a visit to the Tower of London. The Yeoman Warders or Beefeaters,guard the Tower. King Henry VIII first introduced Beefeaters in 1485.They were his bodyguards.They looked after the prisoners in the Tower and guarded the Crown Jewels. These days they guide the tourists who visit the Tower. They also take care of the eight big black ravens which live in the Tower.