Factual error: At one point the barristers are seen going into the old arch entrance of the Old Bailey. However, you cannot actually go in that way, it's blocked off, you have to go in the more modern entrance and through a series of security checks.
Factual error: At several points we are shown the barristers inside the Old Bailey. However, it is in fact the Royal Courts of Justice on The Strand, not the Old Bailey.