Not sure about the Islamification of Britain but I do think we are being overly tolerant. For example we have defacto accepted Islamic blasphemy rules which means that no honest examination of the life of Mohammad can be made without the very real fear of violence, I do not understand why it is acceptable to make fun of Christians, politicians almost everything but Islam. I also think we have not pushed back when Muslims have overstepped the mark, I am thinking of Salmon Rushdie, we should have stood up for our right to expression and yes right to offend, I don't blame muslims for this I blame wrong headed people in authority who are judging a medieval mindset with 21st century values, the end result everyone is unhappy because there are no clear boundaries.