By Bob Denaro (KPM) · BDG Training Team · August 2026 Using AI to prepare to give evidence can amount to witness coaching — that is the clear warning from the Court of Appeal in R v FGD [2026] EWCA Crim 918. A prosecution witness had used AI to generate a mock cross-examination of their account, complete with suggested answers. This post explains what happened, what the court decided, and what it means for anyone who gives evidence. What happened in R v FGD? During a rape tri