The problem as I see it is that the UK's combination of parliamentary sovereignty, no entrenched constitutional rights, and executive dominance where there's a majority makes it v hard to protect minority rights where it's popular to remove them. The ECHR gives at least some protection.

Fair point. But if I certify prematurely and it turns out I was right does that not count as a good certification?

Given the very relaxed attitude to certification in Charterhouse v Lowe I am not sure that this was the right approach. Although Lowe is under appeal of course! Certification has become a bit of a mess really and it is hard to be clear what is being certified, by whom, and to what extent.