For all 8 of my GCSE exams so far I've used a Uniball Jetstream black pen and thought it would be okay as it says that black ink is allowed on the front of most exams. However, some of my friends are saying that the pen is a gel pen and the scanners will remove the ink. On the official Uniball website, it says that the ink from the pen is 'Fast-drying, non-smudge, water-proof, fade-resistant and tamper-proof' as well as saying that it is a hybrid between a ballpoint and a rollerball, so will this happen? I am really worried.