strikeit My DM is religious, came to this country in the late 70s and was horrified by the illiteracy and the isolation she saw amongst a certain section of the Pakistani community.
Yes, it was around the '80s when my grandfather started to get very concerned.
He came to Britain in the late 40s with his siblings; the family had been Sufi for centuries (one of his great uncles lived in a tekke for years and never married). Of course, back then, there just weren't any Muslims in our area at all.
That started to change in the late 50s, and he made friends with a number of Pakistani immigrants, who had come from rather educated backgrounds back in India. I still know their grandchildren today, and what is noticeable is that they are totally integrated into British society -- and seem more English than than English, iykwim.
But then in the late 70s, there was a real difference in the make-up of Muslim migrants to Britain. They were very poor, from very rural areas, had no English, and, to him, seemed to have a very fragile grasp on the tenets of the religion. But then, he'd come from a family of scholarly mystics steeped in very esoteric concepts so I'm not sure whether his expectations were entirely realistic. He certainly left me with an understanding that is really rather enigmatic. 
But it was the Rushdie affair that really bothered him. He found it completely unfathomable. He said it was just nonsense from a clerical and theological point of view as it was Shia guidance that wasn't binding on Sunni muslims, something to do with it not being a proper fatwa in the first place, and that you couldn't blaspheme against the Prophet Mohammed anyway (which you can't; the Prophet Mohammed isn't divine).
But they were burning books in the street over it. And he couldn't believe the British authorities were allowing such a thing to happen. I remember him watching the TV, shaking his head and saying "This is not good. This is not good at all." He thought the people protesting were being used, but could not work out why or by whom, or what the point of it was. He also felt it was going to frighten the English when what we needed was to be close friends and neighbours.
He was heartbroken over 7/7. He went really quiet, stopped going out as much to see his friends, and died a few years later. I think it was the shame of it that affected him so badly at his advanced age. There was always a very strong sense of honour in him: not that "izzat" sense we have in Britain now from South Asia, but more that one had to be noble, ethical and brave, "like Saladin". 
I dread to think how he would have reacted to these grooming cases.
Talking of shame, there's a very good article by Nazir Afzal in today's Daily Mail (I know. I know) about the gross mysogyny in some sections of the Asian community and how it affects the women of those communities. It is really worth reading.
I, for one, did not know that the wife of the Rochdale grooming gang leader Shabir Ahmed had killed herself.
So many victims. There are just no words for it.