Hi Allan, the difference is that according to the Islamic Q&A sit which I linked to inter faith marriage is actively discouraged and those Muslim men who wish to marry a female of another faith must insist on some very strict rules including the insistence that all children are brought up to be Muslims.
As far as female Muslims are concerned, it appears that they are forbidden to marry outwith the faith.
If these conditions are not adhered to, the man or woman is no longer considered a Muslim.
The Muslim community obviously adhere much more strongly to faith teaching than do our population. Nominally Christian.
Inter-marriage seems to me to be a very important part of social integration.