*deep breath*
I don't want to get drawn into the subject particularly, as I tend to rant. But in short...
"Sharia Law" courts that have sprung up in the UK are used voluntarily and mostly for domestic issues. They also operate under UK Law, not in spite of it.
The EDL (and
seemingly to a greater extent, the PDL) are just a branch of right-wing thugs out for a scuffle, for the most part. Although I think that about most extreme groups, be they left or right (I'm not a great fan of the UAF either, even though my views tends to mesh with theirs).
In short, groups like this tend to attract bigotry and those that just want to "belong" to a group, usually the disenfranchised or the unhappy. They're preyed upon by those higher up in the groups - those who just want to be in charge of people and could just as easily have been right-wing as left-wing if they could get a taste of power.
In short, all these political "groups" do is make life uncomfortable for a) those they oppose (usually the media enemy of the moment, or the government bogeyman when they're trying to deflect attention away from them being absolute balloons) and b) the common person in the street who has no issues at all other than large groups of detestable wankers turning up on their street and hurling abuse at each other over a line of policemen while all they want to do is go and get some shopping in.
I'm going to stop now. I just get sad. *snort*