There are many reasons to praise the Norwegian reaction to the Utoya massacre.
It's worth remembering though, that in the aftermath of the 7/7 bombings, Britain prosecuted three people for aiding and abetting the July 7th bombers, and a jury acquitted them of that charge, while convicting two of them of conspiring to attend a terrorist training camp.
This is, to my mind, as least as good a model for justice as Norway's trial of Breivik. Perhaps it is even better, since Breivik admits his guilt, but in the July 7th trial, the UK judicial system was confronted by a trial that combined significant circumstantial evidence, friendships between the accused and the perpetrators of a horrific attack, but where the charges were vigorously contested and denied, with evidence that was interpretable by a jury.
One final point. Few in Britain today know the names of the trio accused of aiding the 7/7 Bombings, even though two of them were jailed for planning to attend terrorist camps in Pakistan. Nor did they receive great publicity for their ideology. They were simply prosecuted, received a balanced judgement, sentenced for what they had been found guilty of, or released, without provoking either public outrage or retribution.
British justice is not without flaws, many extremely serious. We hear about these every day.
Yet sometimes I get the feeling we see justice done well, only elsewhere, and perhaps more importantly, only on TV. That's far from the case, even in the very hardest cases.