I haven't read your links durhamjen, or those posted by thatbags because I'm having a quick catch up before going out. I'll read them later.
I was another person shouting at the radio yesterday. I listened to David Cameron, it's no secret on gransnet that I'm not a tory voter and don't always/often agree with him, but on this occasion I felt he spoke clearly and fairly. I live in the north west, where there is a large Pakistani Muslim population. It's become increasingly common to see women fully covered and men wearing traditional dress. I feel the sense of separateness is increasing whereas as others have already said, previous generations of immigrants have become more, rather than less, British, without losing their sense of identity or feeling oppressed.
I heard Yasmin Quereshi (an MP in the north west) complaining after Cameron's speech that she was fed up with the Muslim community being criticised, marginalised and asked to apologise. She said she was fed up with apologising. It made me smile wryly, because I feel sure she'd expect me to apologise for British colonialism. I shouted at her on the radio as well 
Grandson of New Limerick (Son of New Limerick contd.)
, anyone can find answers/counter arguments to just about any discussions by googling!