Cant be tried in the UK as he didn't break any UK laws. Its another shameful day for the Brits in their recent race to the bottom. I suspect that the incredibly one sided extradition treaty put in place post 9/11, which is under significant attack, will be reversed as a result of this and a number of other cases ongoing.
One has to wonder, why laws developed to combat terrorism are routinely being used to silence internet communications. Democracy is not comparable with corporate guided governance. It should be clear to those who would rule, that when the interests of the public are placed second to the profits of the few, we reach a point when squares fill up, and are named 'freedom' and 'victory'.