Here is my tuppence worth:
nationalism has indeed become a disease.
I think humankind {to be PC } has a tendency to go to the extreme, and do things that are either daft (celibacy, for example), or engage in murder in the name of the ideology.
Nationalism, when it binds people in a region together to strive for some higher goals, or to make lives liveable, is all right, but when it is used to stifle individuality or differences, can either result in elimination of the differences, or their exixstence as rebellious sub-cultures, which can take violent form.
Same for all -isms. I used to say that the history of the last century or so is a history of war of -isms, mostly thought up in Europe or its daughter countries. I am open to correction, though.
Learning languages is a good thing. The Imams should learn English, but I don't see why it should be made compulsory. In fact all the religious people I have met, want their thoughts and sermons to be translated in as many languages as possible. Arabic (and Quranic Arabic in particular), is a beautiful language, and we meet words or phrases that have no exact equivalence in the other language. The Quran being revealed in Arabic, we would expect our religious scholars to be well-versed in that language, and for some of our young to take up Arabic and Quranic studies.
There is a lot of literature available in English, including fatwas (religious edicts), and discussions on many topics.
There are certain parts that have to be in Arabic. When the Quran is quoted, it has to be Arabic. At the start of a lecture particularly the Friday sermon, there are Arabic sermons given by the prophet (saw) that have to be read in Arabic.
Any bilingual Muslim would be only too glad to translate these texts in English, if he has the time. Remember that Islam is a proselytising religion. No hiddenness in it, so we would like you to know what we are saying, only we would like non-Muslims to listen to the whole, rather than pick a few words and start jumping on Islam.
Makes sense?
And PS is right about leanguage learning difficulties for the elderly.
About "feeling" British!
Britain, and well, the rest of the world has changed.
Wanting to change what you do not agree with, is a fundamental right, as long as one does not want to take away the fundamental rights of "others" one does not agree with. ie. try to bring about a change peacefully, and nott ake away someone else's rights.
Coming to live in a society does not mean one has to agree with everything in that society. I can even imagine situations when there isn't much one likes about a society one lives in, but may continue to do so for a variety of valid reasons.
PS, the "Free India Movement" was led by Subash Chandra Bose, a Bengali Hindu. Some Muslim leaders, not just from India, also tried to get help from Germany. Either they did not understand Hitler's philosophy, or the thought the "enemy of my enemy is my friend". And, who can blame them for considering the British Empire as their enemy?