The full title of this paper is 'The Roots of Extremism: The English Defence League and the Counter-Jihad Challenge', which uses polling data from October 2012 and one point is:
The data indicate that supporters of such groups are not just young, uneducated, economically insecure or politically apathetic. They are not simply anti-Muslim or overtly racist, but xenophobic and profoundly hostile towards immigration. They expect inter-communal conflict and believe violence is justifiable. And their beliefs about the threatening nature of Islam have wider public support.
Link:http://www.chathamhouse.org/publicat...rs/view/189767

There is data on whether institutions are trusted which indicate politicians and parliament have shrinking credibility.