Faith Matters, an NGO which works to reduce extremism, intra-faith tensions and promotes interfaith dialogues, published an interesting report on the EDL in 2010.
Download the English Defence League: Challenging Our Country and Our Values of Social Inclusion, Fairness and Equality, [as a PDF].
Apparently, they will be releasing another report shortly.
Meanwhile, keep up with them by following Faith Matters and Tell MAMA on Twitter.