You get what you pay for with some ISP's. Fortunately mine are beligerant fuckers that refuse to be told where to shunt their packets hence I don't get filtered. Long story short only around 5 major ISP's are doing this but thats still a huge swathe of the UK populace being proxied and filtered.
I'm considering openning up promethius as a public (with auth required) proxy but then you'd have to trust me not to expose your perversions to the world
Getting back on track, the UK police identified the image as paedophillic so the buck rests there. Whether they should have or not I don't know, I've not bothered my ass to go look at the image itself so I've nothing to comment.
Getting back off track, incidents like this are a boon to awareness of what people normally take for granted so whilst its only access to one image its affects may change the knowledge and awareness of how the internet really works for millions so its probably a fair trade.
I agree with Ronin on transparent proxies, I use them at home and at work and have for years. Few people realise there is one in place at work and yet the benefits to responsiveness and a cut down on bandwidth during peak hours pays massive benefits. I am semi-evil in that we do some transparent filtering of adverts to improve the end user experience but I doubt people are losing much from less adverts
You could argue fixed routes are also evil in that they force your traffic down one path and not another. But thats how the net works, its open-ness is a carefully negotiated ruse that frequently breaks down as bickering erupts between T1/T2 providers.