For 30 years it has been used to test the fitness of officers who police riots and other outbreaks of serious public disorder. The so-called 'shield run' involves officers covering a distance of 500 metres in less than two minutes, 45 seconds while wearing full riot gear and carrying a shield. But when Inspector Diane Bamber, 51, failed to meet the time limit, she claimed she had been left humiliated. She brought a sex and age discrimination case against her force, Greater Manchester Police, and now stands to win up to £30,000 after an employment tribunal ruled in her favour....