If he is found not guilty, it could have serious ramifications for HMRC. As British law is based on case law (ie what happens in one case has bearings on future cases) It would establish the principle that someone's employer could pay a bonus and if the employer said that it was a gift, then no tax would be paid on it. HMRC could be looking at losing a lot of money over this.
Like everyone's wage going down to £1 less than the threshold and rest being paid as a "gift"?