Agreed. An independent investigation should be precisely that. A genuinely independent auditor is needed to avoid any accusations of cover-up and 'old boys network' cronyism.
I've had my suspicions about this type of cheating for years, so now we know it really goes on. The money we wasted on exam after exam because we weren't in the old boys club doesn't bear thinking about.
I'm so happy to be out of this game now.