I'm not sure what the larger point is that you're trying to make. It seems like you are trying to suggest that Islam is incompatible with western culture and values, but in order to do this you find it necessary to assume (or at least claim) that Adrian/Khalid changed his name explicitly to break his ties with his British heritage.
In order to sustain this claim, you have to believe that people can have an identity that is only one dimensional - that someone can't be both a devout Muslim and a British patriot at the same time (as well as having many other identities).
Why can't a person be a Muslim and honourable Brit (or American) at the same time?
The subsequent claim you make about a similar case with a man changing his name to a Russian variant is not equivalent because Russia is a country whereas Islam is not - changing your name to a Russian name is an explicitly political (or at least a politically tinged cultural) act, whereas changing your name to an Islamic one is not a political act (unless it is explicitly done for political rather than religious reasons, i.e. it can be but it isn't necessarily so).
I don't dispute that some Muslims living in western nations can and do put their Islamic culture above that of their country's. I just don't see why that is automatically the case here.
Finally, the slightly childish claim to be the victim of unfair treatment at the end of your post is both unnecessary and counter productive - it makes your (already weak) argument easy to dismiss as being born of resentment rather than conviction