By the way, before someone accuses me of in some way supporting the Police position in respect of the killings you list, may I make it clear that I dont - I condemn them. The Blair Peach case in particular, has been comprehensively proven to be a cover-up, with the publication of all the police documentation from the investigation last year.

Actually, it's rare. In the recent disgraceful Wiltshire case, Sgt mark Andrews was cleared of what was clearly a vicious assault, on appeal. So he rightly lost his job - but he should have been jailed as well.