Ag, I meant more people we "know" are innocent... rather than just cases where we aren't sure of "guilt".
Is the case that we can't trust the British justice system to get the right answer, so we should minimise punishment, in case? Bearing in mind, the way it is weighted, we are far far more likely to acquit a guilty person, than wrongly convict an innocent person. Wouldn't it be better to get it right in the first place? I don't imagine anyone is suggesting we should execute innocent people... but surely there are some times, that we "know"?
I don't know the answer here, so it is a genuine question... when was the last year we convicted someone, that might have got the death penalty... where we absolutely know we were wrong? (Rather than just revoking).