I think its about confronting the Islamacist mileu as well as the would be jihaddists.Heres a few ideas to start the discusion with, other posters will probably have better ideas.
I think the starting point would be to acknowledge the fact that more working class people are worried about Islamic terrorism than they are about nazis issue and a notice of intent that anti fascism is about confronting all forms of fascism.
1) being at the forefront of opposing any Islamic Society at University that promotes or supports jihaadism or uses quotes from speakers that do ie Durham University last month,
2) gather intelligence about where Islamacists give out leaflets or have stalls , confront and expose them
3) expose and challange the Islamacists on social media like Twitter and Facebook
4)start a dialogue with those who maybe patriotic but are not fascist setting out what your position is regarding the Islamaicsts and the jihaadists. Get a foot in the door with the thousands like that black bloke who out argued the woman in Manchester on YouTube.
5) start a dialogue with those activists who are muslim about raising the profile of opposition, support those who oppose the Islamacists
6) dont be scared to call out the backwardness of conservative Islam and proudly defend values of equality, fraternity and working class unity