The law is set up to prevent whistle-blowers from ever getting a remedy because of.... It's a technical term. There are lots of problems, but there's no reverse onus at the tribunal. The employee has to prove that a reprisal was taken against them, and that's impossible. The burden of proof has to shift to the employer to show that the actions were not a reprisal.
On December 8th, 2022. See this statement in context.